22100020231 has 2 divisors, whose sum is σ = 22100020232. Its totient is φ = 22100020230.

The previous prime is 22100020177. The next prime is 22100020273. The reversal of 22100020231 is 13202000122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22100020231 - 2²¹ = 22097923079 is a prime.

It is a super-2 number, since 2×22100020231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22100027231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050010115 + 11050010116.

It is an arithmetic number, because the mean of its divisors is an integer number (11050010116).

Almost surely, 2^22100020231 is an apocalyptic number.

22100020231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100020231 is an equidigital number, since it uses as much as digits as its factorization.

22100020231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22100020231 its reverse (13202000122), we get a palindrome (35302020353).

The spelling of 22100020231 in words is "twenty-two billion, one hundred million, twenty thousand, two hundred thirty-one".