211100012331 has 12 divisors (see below), whose sum is σ = 304783450488. Its totient is φ = 129907699584.

The previous prime is 211100012329. The next prime is 211100012341. The reversal of 211100012331 is 133210001112.

It is a happy number.

It is not a de Polignac number, because 211100012331 - 2¹ = 211100012329 is a prime.

It is a super-2 number, since 2×211100012331² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211100012331.

It is not an unprimeable number, because it can be changed into a prime (211100012341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208184910 + ... + 208185923.

It is an arithmetic number, because the mean of its divisors is an integer number (25398620874).

Almost surely, 2^211100012331 is an apocalyptic number.

211100012331 is a deficient number, since it is larger than the sum of its proper divisors (93683438157).

211100012331 is a wasteful number, since it uses less digits than its factorization.

211100012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416370862 (or 416370849 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 211100012331 its reverse (133210001112), we get a palindrome (344310013443).

The spelling of 211100012331 in words is "two hundred eleven billion, one hundred million, twelve thousand, three hundred thirty-one".