102121220121112 has 24 divisors (see below), whose sum is σ = 200164348048140. Its totient is φ = 48840583534160.

The previous prime is 102121220121073. The next prime is 102121220121127. The reversal of 102121220121112 is 211121022121201.

It is a happy number.

It is a super-2 number, since 2×102121220121112² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102121220121112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12065357314 + ... + 12065365777.

Almost surely, 2^{102121220121112} is an apocalyptic number.

It is an amenable number.

102121220121112 is a deficient number, since it is larger than the sum of its proper divisors (98043127927028).

102121220121112 is a wasteful number, since it uses less digits than its factorization.

102121220121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24130723143 (or 24130723116 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 102121220121112 its reverse (211121022121201), we get a palindrome (313242242242313).

The spelling of 102121220121112 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twelve".