102120022121 has 8 divisors (see below), whose sum is σ = 110020385664. Its totient is φ = 94226083920.

The previous prime is 102120022111. The next prime is 102120022177. The reversal of 102120022121 is 121220021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102120022121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120022096 and 102120022105.

It is not an unprimeable number, because it can be changed into a prime (102120022111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573295 + ... + 1636916.

It is an arithmetic number, because the mean of its divisors is an integer number (13752548208).

Almost surely, 2^102120022121 is an apocalyptic number.

It is an amenable number.

102120022121 is a deficient number, since it is larger than the sum of its proper divisors (7900363543).

102120022121 is a wasteful number, since it uses less digits than its factorization.

102120022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212671.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102120022121 its reverse (121220021201), we get a palindrome (223340043322).

The spelling of 102120022121 in words is "one hundred two billion, one hundred twenty million, twenty-two thousand, one hundred twenty-one".