23210111211 has 24 divisors (see below), whose sum is σ = 36972320400. Its totient is φ = 12904460352.

The previous prime is 23210111207. The next prime is 23210111273. The reversal of 23210111211 is 11211101232.

It is not a de Polignac number, because 23210111211 - 2² = 23210111207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23210111011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2128236 + ... + 2139113.

It is an arithmetic number, because the mean of its divisors is an integer number (1540513350).

Almost surely, 2^23210111211 is an apocalyptic number.

23210111211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23210111211 is a deficient number, since it is larger than the sum of its proper divisors (13762209189).

23210111211 is a wasteful number, since it uses less digits than its factorization.

23210111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267403 (or 4267396 counting only the distinct ones).

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

Adding to 23210111211 its reverse (11211101232), we get a palindrome (34421212443).

It can be divided in two parts, 23210 and 111211, that added together give a triangular number (134421 = T₅₁₈).

The spelling of 23210111211 in words is "twenty-three billion, two hundred ten million, one hundred eleven thousand, two hundred eleven".