32122464221581 has 2 divisors, whose sum is σ = 32122464221582. Its totient is φ = 32122464221580.

The previous prime is 32122464221443. The next prime is 32122464221591. The reversal of 32122464221581 is 18512246422123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31479572963556 + 642891258025 = 5610666^2 + 801805^2 .

It is a cyclic number.

It is not a de Polignac number, because 32122464221581 - 2²¹ = 32122462124429 is a prime.

It is a super-2 number, since 2×32122464221581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32122464221591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16061232110790 + 16061232110791.

It is an arithmetic number, because the mean of its divisors is an integer number (16061232110791).

Almost surely, 2^{32122464221581} is an apocalyptic number.

It is an amenable number.

32122464221581 is a deficient number, since it is larger than the sum of its proper divisors (1).

32122464221581 is an equidigital number, since it uses as much as digits as its factorization.

32122464221581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 368640, while the sum is 43.

The spelling of 32122464221581 in words is "thirty-two trillion, one hundred twenty-two billion, four hundred sixty-four million, two hundred twenty-one thousand, five hundred eighty-one".