1222221102212 has 12 divisors (see below), whose sum is σ = 2333331195216. Its totient is φ = 555555046440.

The previous prime is 1222221102211. The next prime is 1222221102233. The reversal of 1222221102212 is 2122011222221.

It is not an unprimeable number, because it can be changed into a prime (1222221102211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13888876118 + ... + 13888876205.

It is an arithmetic number, because the mean of its divisors is an integer number (194444266268).

Almost surely, 2^{1222221102212} is an apocalyptic number.

It is an amenable number.

1222221102212 is a deficient number, since it is larger than the sum of its proper divisors (1111110093004).

1222221102212 is a wasteful number, since it uses less digits than its factorization.

1222221102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27777752338 (or 27777752336 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1222221102212 its reverse (2122011222221), we get a palindrome (3344232324433).

The spelling of 1222221102212 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred two thousand, two hundred twelve".