1222212444402 has 16 divisors (see below), whose sum is σ = 2573078830560. Its totient is φ = 385961824512.

The previous prime is 1222212444359. The next prime is 1222212444413. The reversal of 1222212444402 is 2044442122221.

It is a super-2 number, since 2×1222212444402² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222212444402.

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, 5360580783 + ... + 5360581010.

It is an arithmetic number, because the mean of its divisors is an integer number (160817426910).

Almost surely, 2^{1222212444402} is an apocalyptic number.

1222212444402 is an abundant number, since it is smaller than the sum of its proper divisors (1350866386158).

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

1222212444402 is a wasteful number, since it uses less digits than its factorization.

1222212444402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10721161817.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 1222212444402 its reverse (2044442122221), we get a palindrome (3266654566623).

The spelling of 1222212444402 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, four hundred forty-four thousand, four hundred two".