72202201231 has 2 divisors, whose sum is σ = 72202201232. Its totient is φ = 72202201230.

The previous prime is 72202201213. The next prime is 72202201241. The reversal of 72202201231 is 13210220227.

Together with previous prime (72202201213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72202201231 - 2⁷ = 72202201103 is a prime.

It is a super-2 number, since 2×72202201231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72202201241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36101100615 + 36101100616.

It is an arithmetic number, because the mean of its divisors is an integer number (36101100616).

Almost surely, 2^72202201231 is an apocalyptic number.

72202201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

72202201231 is an equidigital number, since it uses as much as digits as its factorization.

72202201231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 72202201231 its reverse (13210220227), we get a palindrome (85412421458).

The spelling of 72202201231 in words is "seventy-two billion, two hundred two million, two hundred one thousand, two hundred thirty-one".