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122130101213 = 433282055661
BaseRepresentation
bin111000110111110000…
…1010111001111011101
3102200020110022222000222
41301233201113033131
54000110301214323
6132034503531125
711552332506011
oct1615741271735
9380213288028
10122130101213
114788229274a
121b805159aa5
13b6945b42a3
145ca81ca541
15329beb69c8
hex1c6f8573dd

122130101213 has 4 divisors (see below), whose sum is σ = 122412157308. Its totient is φ = 121848045120.

The previous prime is 122130101179. The next prime is 122130101257. The reversal of 122130101213 is 312101031221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312101031221 = 744585861603.

It can be written as a sum of positive squares in 2 ways, for example, as 28526534404 + 93603566809 = 168898^2 + 305947^2 .

It is a cyclic number.

It is not a de Polignac number, because 122130101213 - 226 = 122062992349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122130101191 and 122130101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122130101263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141027398 + ... + 141028263.

It is an arithmetic number, because the mean of its divisors is an integer number (30603039327).

Almost surely, 2122130101213 is an apocalyptic number.

It is an amenable number.

122130101213 is a deficient number, since it is larger than the sum of its proper divisors (282056095).

122130101213 is an equidigital number, since it uses as much as digits as its factorization.

122130101213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282056094.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 122130101213 its reverse (312101031221), we get a palindrome (434231132434).

The spelling of 122130101213 in words is "one hundred twenty-two billion, one hundred thirty million, one hundred one thousand, two hundred thirteen".

Divisors: 1 433 282055661 122130101213