211222321431 has 16 divisors (see below), whose sum is σ = 307240151808. Its totient is φ = 128010326400.

The previous prime is 211222321421. The next prime is 211222321433. The reversal of 211222321431 is 134123222112.

It is not a de Polignac number, because 211222321431 - 2²⁹ = 210685450519 is a prime.

It is a super-2 number, since 2×211222321431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222321433) 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, 2516910 + ... + 2599476.

It is an arithmetic number, because the mean of its divisors is an integer number (19202509488).

Almost surely, 2^211222321431 is an apocalyptic number.

211222321431 is a deficient number, since it is larger than the sum of its proper divisors (96017830377).

211222321431 is a wasteful number, since it uses less digits than its factorization.

211222321431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160102.

The product of its digits is 1152, while the sum is 24.

Adding to 211222321431 its reverse (134123222112), we get a palindrome (345345543543).

The spelling of 211222321431 in words is "two hundred eleven billion, two hundred twenty-two million, three hundred twenty-one thousand, four hundred thirty-one".