22211321131231 has 16 divisors (see below), whose sum is σ = 22337808030720. Its totient is φ = 22085099589600.

The previous prime is 22211321131211. The next prime is 22211321131247. The reversal of 22211321131231 is 13213112311222.

It is a cyclic number.

It is not a de Polignac number, because 22211321131231 - 2¹³ = 22211321123039 is a prime.

It is a super-2 number, since 2×22211321131231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22211321131196 and 22211321131205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211321131201) 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, 831840181 + ... + 831866881.

It is an arithmetic number, because the mean of its divisors is an integer number (1396113001920).

Almost surely, 2^{22211321131231} is an apocalyptic number.

22211321131231 is a deficient number, since it is larger than the sum of its proper divisors (126486899489).

22211321131231 is a wasteful number, since it uses less digits than its factorization.

22211321131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31494.

The product of its digits is 864, while the sum is 25.

Adding to 22211321131231 its reverse (13213112311222), we get a palindrome (35424433442453).

The spelling of 22211321131231 in words is "twenty-two trillion, two hundred eleven billion, three hundred twenty-one million, one hundred thirty-one thousand, two hundred thirty-one".