23132465221 has 2 divisors, whose sum is σ = 23132465222. Its totient is φ = 23132465220.

The previous prime is 23132465197. The next prime is 23132465227. The reversal of 23132465221 is 12256423132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13113456196 + 10019009025 = 114514^2 + 100095^2 .

It is a cyclic number.

It is not a de Polignac number, because 23132465221 - 2⁵ = 23132465189 is a prime.

It is a super-2 number, since 2×23132465221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23132465227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11566232610 + 11566232611.

It is an arithmetic number, because the mean of its divisors is an integer number (11566232611).

Almost surely, 2^23132465221 is an apocalyptic number.

It is an amenable number.

23132465221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23132465221 is an equidigital number, since it uses as much as digits as its factorization.

23132465221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

Adding to 23132465221 its reverse (12256423132), we get a palindrome (35388888353).

The spelling of 23132465221 in words is "twenty-three billion, one hundred thirty-two million, four hundred sixty-five thousand, two hundred twenty-one".