2021200111100 has 36 divisors (see below), whose sum is σ = 4576700082864. Its totient is φ = 773328737280.

The previous prime is 2021200111067. The next prime is 2021200111127. The reversal of 2021200111100 is 11110021202.

It is a super-2 number, since 2×2021200111100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439389029 + ... + 439393628.

Almost surely, 2^{2021200111100} is an apocalyptic number.

2021200111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021200111100 is an abundant number, since it is smaller than the sum of its proper divisors (2555499971764).

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

2021200111100 is a wasteful number, since it uses less digits than its factorization.

2021200111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878782694 (or 878782687 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2021200111100 its reverse (11110021202), we get a palindrome (2032310132302).

The spelling of 2021200111100 in words is "two trillion, twenty-one billion, two hundred million, one hundred eleven thousand, one hundred".