210101211100 has 72 divisors (see below), whose sum is σ = 497464910208. Its totient is φ = 76385380800.

The previous prime is 210101211091. The next prime is 210101211161. The reversal of 210101211100 is 1112101012.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 6631497 + ... + 6663103.

It is an arithmetic number, because the mean of its divisors is an integer number (6909234864).

Almost surely, 2^210101211100 is an apocalyptic number.

210101211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210101211100 is an abundant number, since it is smaller than the sum of its proper divisors (287363699108).

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

210101211100 is a wasteful number, since it uses less digits than its factorization.

210101211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37675 (or 37668 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 210101211100 its reverse (1112101012), we get a palindrome (211213312112).

It can be divided in two parts, 2101012 and 11100, that added together give a palindrome (2112112).

The spelling of 210101211100 in words is "two hundred ten billion, one hundred one million, two hundred eleven thousand, one hundred".