21513106160224 has 48 divisors (see below), whose sum is σ = 48404821334688. Its totient is φ = 9219839311872.

The previous prime is 21513106160197. The next prime is 21513106160239. The reversal of 21513106160224 is 42206160131512.

It is a super-2 number, since 2×21513106160224² (a number of 27 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 21513106160224.

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, 48368032 + ... + 48810784.

It is an arithmetic number, because the mean of its divisors is an integer number (1008433777806).

Almost surely, 2^{21513106160224} is an apocalyptic number.

It is an amenable number.

21513106160224 is an abundant number, since it is smaller than the sum of its proper divisors (26891715174464).

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

21513106160224 is a wasteful number, since it uses less digits than its factorization.

21513106160224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659687 (or 659679 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 21513106160224 its reverse (42206160131512), we get a palindrome (63719266291736).

The spelling of 21513106160224 in words is "twenty-one trillion, five hundred thirteen billion, one hundred six million, one hundred sixty thousand, two hundred twenty-four".