102221031212 has 24 divisors (see below), whose sum is σ = 193814436816. Its totient is φ = 46985315328.

The previous prime is 102221031193. The next prime is 102221031223. The reversal of 102221031212 is 212130122201.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17476733 + ... + 17482580.

It is an arithmetic number, because the mean of its divisors is an integer number (8075601534).

Almost surely, 2^102221031212 is an apocalyptic number.

It is an amenable number.

102221031212 is a deficient number, since it is larger than the sum of its proper divisors (91593405604).

102221031212 is a wasteful number, since it uses less digits than its factorization.

102221031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34959377 (or 34959375 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 102221031212 its reverse (212130122201), we get a palindrome (314351153413).

The spelling of 102221031212 in words is "one hundred two billion, two hundred twenty-one million, thirty-one thousand, two hundred twelve".