211223110131 has 32 divisors (see below), whose sum is σ = 341423078400. Its totient is φ = 127994358240.

The previous prime is 211223110099. The next prime is 211223110141. The reversal of 211223110131 is 131011322112.

It is not a de Polignac number, because 211223110131 - 2⁵ = 211223110099 is a prime.

It is a super-2 number, since 2×211223110131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211223110141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2015725 + ... + 2117921.

It is an arithmetic number, because the mean of its divisors is an integer number (10669471200).

Almost surely, 2^211223110131 is an apocalyptic number.

211223110131 is a deficient number, since it is larger than the sum of its proper divisors (130199968269).

211223110131 is a wasteful number, since it uses less digits than its factorization.

211223110131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109176 (or 109170 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 211223110131 its reverse (131011322112), we get a palindrome (342234432243).

It can be divided in two parts, 21122 and 3110131, that added together give a triangular number (3131253 = T₂₅₀₂).

The spelling of 211223110131 in words is "two hundred eleven billion, two hundred twenty-three million, one hundred ten thousand, one hundred thirty-one".