22101220231 has 2 divisors, whose sum is σ = 22101220232. Its totient is φ = 22101220230.

The previous prime is 22101220181. The next prime is 22101220313. The reversal of 22101220231 is 13202210122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22101220231 - 2⁷ = 22101220103 is a prime.

It is a super-2 number, since 2×22101220231² (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 (22101220331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050610115 + 11050610116.

It is an arithmetic number, because the mean of its divisors is an integer number (11050610116).

Almost surely, 2^22101220231 is an apocalyptic number.

22101220231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101220231 is an equidigital number, since it uses as much as digits as its factorization.

22101220231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22101220231 its reverse (13202210122), we get a palindrome (35303430353).

The spelling of 22101220231 in words is "twenty-two billion, one hundred one million, two hundred twenty thousand, two hundred thirty-one".