221122111202212 has 48 divisors (see below), whose sum is σ = 444368996628480. Its totient is φ = 95218167924000.

The previous prime is 221122111202159. The next prime is 221122111202219. The reversal of 221122111202212 is 212202111221122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (221122111202219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40176753 + ... + 45347719.

It is an arithmetic number, because the mean of its divisors is an integer number (9257687429760).

Almost surely, 2^{221122111202212} is an apocalyptic number.

221122111202212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221122111202212 is an abundant number, since it is smaller than the sum of its proper divisors (223246885426268).

221122111202212 is a wasteful number, since it uses less digits than its factorization.

221122111202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222152 (or 5222150 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 221122111202212 its reverse (212202111221122), we get a palindrome (433324222423334).

The spelling of 221122111202212 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred eleven million, two hundred two thousand, two hundred twelve".