211012210100020 has 96 divisors (see below), whose sum is σ = 541138706760960. Its totient is φ = 67466643793920.

The previous prime is 211012210099987. The next prime is 211012210100033. The reversal of 211012210100020 is 20001012210112.

It is a super-2 number, since 2×211012210100020² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406440546 + ... + 406959385.

It is an arithmetic number, because the mean of its divisors is an integer number (5636861528760).

Almost surely, 2^{211012210100020} is an apocalyptic number.

211012210100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211012210100020 is an abundant number, since it is smaller than the sum of its proper divisors (330126496660940).

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

211012210100020 is a wasteful number, since it uses less digits than its factorization.

211012210100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813400073 (or 813400071 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211012210100020 its reverse (20001012210112), we get a palindrome (231013222310132).

The spelling of 211012210100020 in words is "two hundred eleven trillion, twelve billion, two hundred ten million, one hundred thousand, twenty".