12212020021000 has 32 divisors (see below), whose sum is σ = 28576126851480. Its totient is φ = 4884808008000.

The previous prime is 12212020020961. The next prime is 12212020021007. The reversal of 12212020021000 is 12002021221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3701999187364 + 8510020833636 = 1924058^2 + 2917194^2 .

It is not an unprimeable number, because it can be changed into a prime (12212020021007) 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, 6106009011 + ... + 6106011010.

Almost surely, 2^{12212020021000} is an apocalyptic number.

12212020021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212020021000 is an abundant number, since it is smaller than the sum of its proper divisors (16364106830480).

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

12212020021000 is a wasteful number, since it uses less digits than its factorization.

12212020021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12212020042 (or 12212020028 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12212020021000 its reverse (12002021221), we get a palindrome (12224022042221).

The spelling of 12212020021000 in words is "twelve trillion, two hundred twelve billion, twenty million, twenty-one thousand".