211012211211021 has 96 divisors (see below), whose sum is σ = 367706828361600. Its totient is φ = 115125480714240.

The previous prime is 211012211210929. The next prime is 211012211211029. The reversal of 211012211211021 is 120112112210112.

It is a happy number.

211012211211021 is a `hidden beast` number, since 211 + 0 + 1 + 221 + 1 + 211 + 0 + 21 = 666.

It is not a de Polignac number, because 211012211211021 - 2²² = 211012207016717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211012211210985 and 211012211211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012211211029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25043056 + ... + 32391033.

It is an arithmetic number, because the mean of its divisors is an integer number (3830279462100).

Almost surely, 2^{211012211211021} is an apocalyptic number.

It is an amenable number.

211012211211021 is a deficient number, since it is larger than the sum of its proper divisors (156694617150579).

211012211211021 is a wasteful number, since it uses less digits than its factorization.

211012211211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57434219 (or 57434216 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211012211211021 its reverse (120112112210112), we get a palindrome (331124323421133).

Subtracting from 211012211211021 its reverse (120112112210112), we obtain a palindrome (90900099000909).

The spelling of 211012211211021 in words is "two hundred eleven trillion, twelve billion, two hundred eleven million, two hundred eleven thousand, twenty-one".