2021211331100 has 72 divisors (see below), whose sum is σ = 4793914346928. Its totient is φ = 735154675200.

The previous prime is 2021211331099. The next prime is 2021211331123. The reversal of 2021211331100 is 11331121202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11515721 + ... + 11689920.

Almost surely, 2^{2021211331100} is an apocalyptic number.

2021211331100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021211331100 is an abundant number, since it is smaller than the sum of its proper divisors (2772703015828).

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

2021211331100 is a wasteful number, since it uses less digits than its factorization.

2021211331100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23205735 (or 23205728 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2021211331100 its reverse (11331121202), we get a palindrome (2032542452302).

The spelling of 2021211331100 in words is "two trillion, twenty-one billion, two hundred eleven million, three hundred thirty-one thousand, one hundred".