211021112100 has 72 divisors (see below), whose sum is σ = 627055921408. Its totient is φ = 54751420800.

The previous prime is 211021112077. The next prime is 211021112111. The reversal of 211021112100 is 1211120112.

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

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, 9494356 + ... + 9516555.

Almost surely, 2^211021112100 is an apocalyptic number.

211021112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211021112100 is an abundant number, since it is smaller than the sum of its proper divisors (416034809308).

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

211021112100 is a wasteful number, since it uses less digits than its factorization.

211021112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19010965 (or 19010958 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211021112100 its reverse (1211120112), we get a palindrome (212232232212).

The spelling of 211021112100 in words is "two hundred eleven billion, twenty-one million, one hundred twelve thousand, one hundred".