102021220022212 has 6 divisors (see below), whose sum is σ = 178537135038878. Its totient is φ = 51010610011104.

The previous prime is 102021220022191. The next prime is 102021220022243. The reversal of 102021220022212 is 212220022120201.

It can be written as a sum of positive squares in only one way, i.e., 101534763990916 + 486456031296 = 10076446^2 + 697464^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102021220022212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752652502773 + ... + 12752652502780.

Almost surely, 2^{102021220022212} is an apocalyptic number.

It is an amenable number.

102021220022212 is a deficient number, since it is larger than the sum of its proper divisors (76515915016666).

102021220022212 is a wasteful number, since it uses less digits than its factorization.

102021220022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25505305005557 (or 25505305005555 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 102021220022212 its reverse (212220022120201), we get a palindrome (314241242142413).

The spelling of 102021220022212 in words is "one hundred two trillion, twenty-one billion, two hundred twenty million, twenty-two thousand, two hundred twelve".