23211012111 has 16 divisors (see below), whose sum is σ = 35379911424. Its totient is φ = 13259404224.

The previous prime is 23211012109. The next prime is 23211012113. The reversal of 23211012111 is 11121011232.

It is an interprime number because it is at equal distance from previous prime (23211012109) and next prime (23211012113).

It is not a de Polignac number, because 23211012111 - 2¹ = 23211012109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23211012113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96526 + ... + 236091.

It is an arithmetic number, because the mean of its divisors is an integer number (2211244464).

Almost surely, 2^23211012111 is an apocalyptic number.

23211012111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23211012111 is a deficient number, since it is larger than the sum of its proper divisors (12168899313).

23211012111 is a wasteful number, since it uses less digits than its factorization.

23211012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335950.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 23211012111 its reverse (11121011232), we get a palindrome (34332023343).

The spelling of 23211012111 in words is "twenty-three billion, two hundred eleven million, twelve thousand, one hundred eleven".