20211021120212 has 36 divisors (see below), whose sum is σ = 38310830722080. Its totient is φ = 9325352024352.

The previous prime is 20211021120203. The next prime is 20211021120259. The reversal of 20211021120212 is 21202112011202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2260418 + ... + 6747705.

It is an arithmetic number, because the mean of its divisors is an integer number (1064189742280).

Almost surely, 2^{20211021120212} is an apocalyptic number.

It is an amenable number.

20211021120212 is a deficient number, since it is larger than the sum of its proper divisors (18099809601868).

20211021120212 is a wasteful number, since it uses less digits than its factorization.

20211021120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9011472 (or 9011457 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20211021120212 its reverse (21202112011202), we get a palindrome (41413133131414).

The spelling of 20211021120212 in words is "twenty trillion, two hundred eleven billion, twenty-one million, one hundred twenty thousand, two hundred twelve".