21263233062224 has 20 divisors (see below), whose sum is σ = 41872883142900. Its totient is φ = 10457327735040.

The previous prime is 21263233062187. The next prime is 21263233062341. The reversal of 21263233062224 is 42226033236212.

It can be written as a sum of positive squares in 2 ways, for example, as 636484840000 + 20626748222224 = 797800^2 + 4541668^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10893048749 + ... + 10893050700.

It is an arithmetic number, because the mean of its divisors is an integer number (2093644157145).

Almost surely, 2^{21263233062224} is an apocalyptic number.

It is an amenable number.

21263233062224 is a deficient number, since it is larger than the sum of its proper divisors (20609650080676).

21263233062224 is a wasteful number, since it uses less digits than its factorization.

21263233062224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21786099518 (or 21786099512 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 38.

Adding to 21263233062224 its reverse (42226033236212), we get a palindrome (63489266298436).

The spelling of 21263233062224 in words is "twenty-one trillion, two hundred sixty-three billion, two hundred thirty-three million, sixty-two thousand, two hundred twenty-four".