213020111100 has 72 divisors (see below), whose sum is σ = 632996009968. Its totient is φ = 55270080000.

The previous prime is 213020111093. The next prime is 213020111113. The reversal of 213020111100 is 1111020312.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a zygodrome in base 2.

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, 9584401 + ... + 9606600.

Almost surely, 2^213020111100 is an apocalyptic number.

213020111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213020111100 is an abundant number, since it is smaller than the sum of its proper divisors (419975898868).

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

213020111100 is a wasteful number, since it uses less digits than its factorization.

213020111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19191055 (or 19191048 counting only the distinct ones).

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

Adding to 213020111100 its reverse (1111020312), we get a palindrome (214131131412).

The spelling of 213020111100 in words is "two hundred thirteen billion, twenty million, one hundred eleven thousand, one hundred".