1222221112212 has 24 divisors (see below), whose sum is σ = 2851910634496. Its totient is φ = 407398269888.

The previous prime is 1222221112199. The next prime is 1222221112237. The reversal of 1222221112212 is 2122111222221.

It is a nude number because it is divisible by every one of its digits.

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, 502228 + ... + 1642155.

Almost surely, 2^{1222221112212} is an apocalyptic number.

1222221112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222221112212 is an abundant number, since it is smaller than the sum of its proper divisors (1629689522284).

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

1222221112212 is a wasteful number, since it uses less digits than its factorization.

1222221112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191887 (or 2191885 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 1222221112212 its reverse (2122111222221), we get a palindrome (3344332334433).

The spelling of 1222221112212 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twelve".