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122021210213 = 764726942197
BaseRepresentation
bin111000110100100000…
…1111110100001100101
3102122221212102201122222
41301221001332201211
53444344412211323
6132020014002125
711546541113360
oct1615101764145
9378855381588
10122021210213
1147826879291
121b7947a6345
13b677b79946
145c979630d7
1532926579c8
hex1c6907e865

122021210213 has 8 divisors (see below), whose sum is σ = 139668354432. Its totient is φ = 104427951696.

The previous prime is 122021210203. The next prime is 122021210251. The reversal of 122021210213 is 312012120221.

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 122021210213 - 26 = 122021210149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122021210191 and 122021210200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021210203) 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, 13466570 + ... + 13475627.

It is an arithmetic number, because the mean of its divisors is an integer number (17458544304).

Almost surely, 2122021210213 is an apocalyptic number.

It is an amenable number.

122021210213 is a deficient number, since it is larger than the sum of its proper divisors (17647144219).

122021210213 is an equidigital number, since it uses as much as digits as its factorization.

122021210213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26942851.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 122021210213 its reverse (312012120221), we get a palindrome (434033330434).

The spelling of 122021210213 in words is "one hundred twenty-two billion, twenty-one million, two hundred ten thousand, two hundred thirteen".

Divisors: 1 7 647 4529 26942197 188595379 17431601459 122021210213