22211031121231 has 4 divisors (see below), whose sum is σ = 22230809422552. Its totient is φ = 22191252819912.

The previous prime is 22211031121199. The next prime is 22211031121273. The reversal of 22211031121231 is 13212113011222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22211031121231 - 2⁵ = 22211031121199 is a prime.

It is a super-2 number, since 2×22211031121231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211031127231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9889148976 + ... + 9889151221.

It is an arithmetic number, because the mean of its divisors is an integer number (5557702355638).

Almost surely, 2^{22211031121231} is an apocalyptic number.

22211031121231 is a deficient number, since it is larger than the sum of its proper divisors (19778301321).

22211031121231 is a wasteful number, since it uses less digits than its factorization.

22211031121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19778301320.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 22211031121231 its reverse (13212113011222), we get a palindrome (35423144132453).

The spelling of 22211031121231 in words is "twenty-two trillion, two hundred eleven billion, thirty-one million, one hundred twenty-one thousand, two hundred thirty-one".