22211110012212 has 96 divisors (see below), whose sum is σ = 62886347207040. Its totient is φ = 6723455880960.

The previous prime is 22211110012183. The next prime is 22211110012283. The reversal of 22211110012212 is 21221001111222.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8863483 + ... + 11089794.

It is an arithmetic number, because the mean of its divisors is an integer number (655066116740).

Almost surely, 2^{22211110012212} is an apocalyptic number.

22211110012212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22211110012212 is an abundant number, since it is smaller than the sum of its proper divisors (40675237194828).

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

22211110012212 is a wasteful number, since it uses less digits than its factorization.

22211110012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19954238 (or 19954230 counting only the distinct ones).

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

Adding to 22211110012212 its reverse (21221001111222), we get a palindrome (43432111123434).

The spelling of 22211110012212 in words is "twenty-two trillion, two hundred eleven billion, one hundred ten million, twelve thousand, two hundred twelve".