102212021121 has 64 divisors (see below), whose sum is σ = 167956039680. Its totient is φ = 53983480320.

The previous prime is 102212021111. The next prime is 102212021141. The reversal of 102212021121 is 121120212201.

It is not a de Polignac number, because 102212021121 - 2⁷ = 102212020993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102212021121.

It is not an unprimeable number, because it can be changed into a prime (102212021111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17377101 + ... + 17382981.

It is an arithmetic number, because the mean of its divisors is an integer number (2624313120).

Almost surely, 2^102212021121 is an apocalyptic number.

It is an amenable number.

102212021121 is a deficient number, since it is larger than the sum of its proper divisors (65744018559).

102212021121 is a wasteful number, since it uses less digits than its factorization.

102212021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6966.

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

Adding to 102212021121 its reverse (121120212201), we get a palindrome (223332233322).

The spelling of 102212021121 in words is "one hundred two billion, two hundred twelve million, twenty-one thousand, one hundred twenty-one".