1222212011200 has 42 divisors (see below), whose sum is σ = 3007405433996. Its totient is φ = 488884803840.

The previous prime is 1222212011191. The next prime is 1222212011231. The reversal of 1222212011200 is 21102122221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 381939654 + ... + 381942853.

Almost surely, 2^{1222212011200} is an apocalyptic number.

1222212011200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222212011200 is an abundant number, since it is smaller than the sum of its proper divisors (1785193422796).

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

1222212011200 is an equidigital number, since it uses as much as digits as its factorization.

1222212011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763882529 (or 763882514 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222212011200 its reverse (21102122221), we get a palindrome (1243314133421).

The spelling of 1222212011200 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, eleven thousand, two hundred".