102122120200121 has 16 divisors (see below), whose sum is σ = 116765979079680. Its totient is φ = 87492009805200.

The previous prime is 102122120200063. The next prime is 102122120200123. The reversal of 102122120200121 is 121002021221201.

It is not a de Polignac number, because 102122120200121 - 2²² = 102122116005817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102122120200121.

It is not an unprimeable number, because it can be changed into a prime (102122120200123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 680054396 + ... + 680204546.

It is an arithmetic number, because the mean of its divisors is an integer number (7297873692480).

Almost surely, 2^{102122120200121} is an apocalyptic number.

It is an amenable number.

102122120200121 is a deficient number, since it is larger than the sum of its proper divisors (14643858879559).

102122120200121 is a wasteful number, since it uses less digits than its factorization.

102122120200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195284.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102122120200121 its reverse (121002021221201), we get a palindrome (223124141421322).

The spelling of 102122120200121 in words is "one hundred two trillion, one hundred twenty-two billion, one hundred twenty million, two hundred thousand, one hundred twenty-one".