102021222111012 has 36 divisors (see below), whose sum is σ = 257887617682240. Its totient is φ = 34006989698352.

The previous prime is 102021222110999. The next prime is 102021222111019. The reversal of 102021222111012 is 210111222120201.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×102021222111012² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (102021222111019) 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, 12161289 + ... + 18760047.

Almost surely, 2^{102021222111012} is an apocalyptic number.

102021222111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102021222111012 is an abundant number, since it is smaller than the sum of its proper divisors (155866395571228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102021222111012 is a wasteful number, since it uses less digits than its factorization.

102021222111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7028232 (or 7028227 counting only the distinct ones).

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

Adding to 102021222111012 its reverse (210111222120201), we get a palindrome (312132444231213).

The spelling of 102021222111012 in words is "one hundred two trillion, twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, twelve".