12321232101564 has 24 divisors (see below), whose sum is σ = 29291985752400. Its totient is φ = 4029585341184.

The previous prime is 12321232101559. The next prime is 12321232101613. The reversal of 12321232101564 is 46510123212321.

It is a super-2 number, since 2×12321232101564² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9686502589 + ... + 9686503860.

It is an arithmetic number, because the mean of its divisors is an integer number (1220499406350).

Almost surely, 2^{12321232101564} is an apocalyptic number.

It is an amenable number.

12321232101564 is an abundant number, since it is smaller than the sum of its proper divisors (16970753650836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12321232101564 is a wasteful number, since it uses less digits than its factorization.

12321232101564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19373006509 (or 19373006507 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 12321232101564 its reverse (46510123212321), we get a palindrome (58831355313885).

The spelling of 12321232101564 in words is "twelve trillion, three hundred twenty-one billion, two hundred thirty-two million, one hundred one thousand, five hundred sixty-four".