102220111212 has 24 divisors (see below), whose sum is σ = 238561502256. Its totient is φ = 34066526208.

The previous prime is 102220111211. The next prime is 102220111219. The reversal of 102220111212 is 212111022201.

It is a super-2 number, since 2×102220111212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102220111191 and 102220111200.

It is not an unprimeable number, because it can be changed into a prime (102220111211) 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, 793113 + ... + 912944.

It is an arithmetic number, because the mean of its divisors is an integer number (9940062594).

Almost surely, 2^102220111212 is an apocalyptic number.

102220111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102220111212 is an abundant number, since it is smaller than the sum of its proper divisors (136341391044).

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

102220111212 is a wasteful number, since it uses less digits than its factorization.

102220111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711057 (or 1711055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102220111212 its reverse (212111022201), we get a palindrome (314331133413).

The spelling of 102220111212 in words is "one hundred two billion, two hundred twenty million, one hundred eleven thousand, two hundred twelve".