102111202022121 has 12 divisors (see below), whose sum is σ = 147789537558000. Its totient is φ = 67937713566840.

The previous prime is 102111202022077. The next prime is 102111202022143. The reversal of 102111202022121 is 121220202111201.

102111202022121 is a `hidden beast` number, since 10 + 211 + 1 + 202 + 0 + 221 + 21 = 666.

It is not a de Polignac number, because 102111202022121 - 2¹⁴ = 102111202005737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102111202022094 and 102111202022103.

It is not an unprimeable number, because it can be changed into a prime (102111202022161) 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, 11368421475 + ... + 11368430456.

It is an arithmetic number, because the mean of its divisors is an integer number (12315794796500).

Almost surely, 2^{102111202022121} is an apocalyptic number.

It is an amenable number.

102111202022121 is a deficient number, since it is larger than the sum of its proper divisors (45678335535879).

102111202022121 is a wasteful number, since it uses less digits than its factorization.

102111202022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22736852436 (or 22736852433 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 102111202022121 its reverse (121220202111201), we get a palindrome (223331404133322).

The spelling of 102111202022121 in words is "one hundred two trillion, one hundred eleven billion, two hundred two million, twenty-two thousand, one hundred twenty-one".