12220021222000 has 40 divisors (see below), whose sum is σ = 29548011319632. Its totient is φ = 4888008488000.

The previous prime is 12220021221893. The next prime is 12220021222067. The reversal of 12220021222000 is 22212002221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×12220021222000² (a number of 27 digits) contains 22 as substring.

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

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, 3055003306 + ... + 3055007305.

Almost surely, 2^{12220021222000} is an apocalyptic number.

12220021222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220021222000 is an abundant number, since it is smaller than the sum of its proper divisors (17327990097632).

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

12220021222000 is an equidigital number, since it uses as much as digits as its factorization.

12220021222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110010634 (or 6110010618 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12220021222000 its reverse (22212002221), we get a palindrome (12242233224221).

The spelling of 12220021222000 in words is "twelve trillion, two hundred twenty billion, twenty-one million, two hundred twenty-two thousand".