211324433334021 has 48 divisors (see below), whose sum is σ = 364192139505600. Its totient is φ = 120755191840416.

The previous prime is 211324433334017. The next prime is 211324433334041. The reversal of 211324433334021 is 120433334423112.

211324433334021 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 244 + 3 + 3 + 3 + 3 + 402 + 1 = 666.

It is not a de Polignac number, because 211324433334021 - 2² = 211324433334017 is a prime.

It is a super-2 number, since 2×211324433334021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211324433334041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100784335 + ... + 102859763.

It is an arithmetic number, because the mean of its divisors is an integer number (7587336239700).

Almost surely, 2^{211324433334021} is an apocalyptic number.

211324433334021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211324433334021 is a deficient number, since it is larger than the sum of its proper divisors (152867706171579).

211324433334021 is a wasteful number, since it uses less digits than its factorization.

211324433334021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152415 (or 2152402 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 211324433334021 its reverse (120433334423112), we get a palindrome (331757767757133).

The spelling of 211324433334021 in words is "two hundred eleven trillion, three hundred twenty-four billion, four hundred thirty-three million, three hundred thirty-four thousand, twenty-one".