102122210121 has 12 divisors (see below), whose sum is σ = 139942493712. Its totient is φ = 66241430928.

The previous prime is 102122210111. The next prime is 102122210143. The reversal of 102122210121 is 121012221201.

It is not a de Polignac number, because 102122210121 - 2⁵ = 102122210089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102122210121.

It is not an unprimeable number, because it can be changed into a prime (102122210111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12428595 + ... + 12436808.

It is an arithmetic number, because the mean of its divisors is an integer number (11661874476).

Almost surely, 2^102122210121 is an apocalyptic number.

It is an amenable number.

102122210121 is a deficient number, since it is larger than the sum of its proper divisors (37820283591).

102122210121 is an equidigital number, since it uses as much as digits as its factorization.

102122210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24865480 (or 24865443 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102122210121 its reverse (121012221201), we get a palindrome (223134431322).

The spelling of 102122210121 in words is "one hundred two billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".