2221100112212 has 24 divisors (see below), whose sum is σ = 4025535978240. Its totient is φ = 1071612573920.

The previous prime is 2221100112193. The next prime is 2221100112263. The reversal of 2221100112212 is 2122110011222.

It is a congruent number.

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, 83186387 + ... + 83213082.

It is an arithmetic number, because the mean of its divisors is an integer number (167730665760).

Almost surely, 2^{2221100112212} is an apocalyptic number.

It is an amenable number.

2221100112212 is a deficient number, since it is larger than the sum of its proper divisors (1804435866028).

2221100112212 is a wasteful number, since it uses less digits than its factorization.

2221100112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166399591 (or 166399589 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2221100112212 its reverse (2122110011222), we get a palindrome (4343210123434).

The spelling of 2221100112212 in words is "two trillion, two hundred twenty-one billion, one hundred million, one hundred twelve thousand, two hundred twelve".