20021201002002 has 32 divisors (see below), whose sum is σ = 42152696107200. Its totient is φ = 6322064637888.

The previous prime is 20021201001979. The next prime is 20021201002027. The reversal of 20021201002002 is 20020010212002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4105477 + ... + 7543032.

It is an arithmetic number, because the mean of its divisors is an integer number (1317271753350).

Almost surely, 2^{20021201002002} is an apocalyptic number.

20021201002002 is an abundant number, since it is smaller than the sum of its proper divisors (22131495105198).

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

20021201002002 is a wasteful number, since it uses less digits than its factorization.

20021201002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11663610.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20021201002002 its reverse (20020010212002), we get a palindrome (40041211214004).

The spelling of 20021201002002 in words is "twenty trillion, twenty-one billion, two hundred one million, two thousand, two".