22001301231 has 32 divisors (see below), whose sum is σ = 37080519168. Its totient is φ = 11291425920.

The previous prime is 22001301229. The next prime is 22001301233. The reversal of 22001301231 is 13210310022.

It is an interprime number because it is at equal distance from previous prime (22001301229) and next prime (22001301233).

It is not a de Polignac number, because 22001301231 - 2¹ = 22001301229 is a prime.

It is a super-2 number, since 2×22001301231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22001301231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001301233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1078965 + ... + 1099166.

It is an arithmetic number, because the mean of its divisors is an integer number (1158766224).

Almost surely, 2^22001301231 is an apocalyptic number.

22001301231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22001301231 is a deficient number, since it is larger than the sum of its proper divisors (15079217937).

22001301231 is a wasteful number, since it uses less digits than its factorization.

22001301231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178191.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 22001301231 its reverse (13210310022), we get a palindrome (35211611253).

The spelling of 22001301231 in words is "twenty-two billion, one million, three hundred one thousand, two hundred thirty-one".