12222020221000 has 32 divisors (see below), whose sum is σ = 28599527319480. Its totient is φ = 4888808088000.

The previous prime is 12222020220941. The next prime is 12222020221003. The reversal of 12222020221000 is 12202022221.

It can be written as a sum of positive squares in 4 ways, for example, as 7870482371844 + 4351537849156 = 2805438^2 + 2086034^2 .

It is not an unprimeable number, because it can be changed into a prime (12222020221003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6111009111 + ... + 6111011110.

Almost surely, 2^{12222020221000} is an apocalyptic number.

12222020221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222020221000 is an abundant number, since it is smaller than the sum of its proper divisors (16377507098480).

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

12222020221000 is a wasteful number, since it uses less digits than its factorization.

12222020221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12222020242 (or 12222020228 counting only the distinct ones).

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

Adding to 12222020221000 its reverse (12202022221), we get a palindrome (12234222243221).

The spelling of 12222020221000 in words is "twelve trillion, two hundred twenty-two billion, twenty million, two hundred twenty-one thousand".