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122121300031 = 379911353699
BaseRepresentation
bin111000110111011111…
…1110010100000111111
3102200012211202211002021
41301232333302200333
54000101023100111
6132033551141011
711552164631413
oct1615677624077
9380184684067
10122121300031
1147878321245
121b802214767
13b6928222a3
145ca6d78d43
15329b328d71
hex1c6eff283f

122121300031 has 8 divisors (see below), whose sum is σ = 122578272000. Its totient is φ = 121665038040.

The previous prime is 122121300029. The next prime is 122121300053. The reversal of 122121300031 is 130003121221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122121300031 - 21 = 122121300029 is a prime.

It is a super-2 number, since 2×1221213000312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122121299978 and 122121300014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121300061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168420 + ... + 522118.

It is an arithmetic number, because the mean of its divisors is an integer number (15322284000).

Almost surely, 2122121300031 is an apocalyptic number.

122121300031 is a deficient number, since it is larger than the sum of its proper divisors (456971969).

122121300031 is an equidigital number, since it uses as much as digits as its factorization.

122121300031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354989.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 122121300031 its reverse (130003121221), we get a palindrome (252124421252).

The spelling of 122121300031 in words is "one hundred twenty-two billion, one hundred twenty-one million, three hundred thousand, thirty-one".

Divisors: 1 379 911 345269 353699 134051921 322219789 122121300031