21225201310232 has 16 divisors (see below), whose sum is σ = 39830611445640. Its totient is φ = 10603704924736.

The previous prime is 21225201310127. The next prime is 21225201310259. The reversal of 21225201310232 is 23201310252212.

It is a happy number.

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, 1111956158 + ... + 1111975245.

Almost surely, 2^{21225201310232} is an apocalyptic number.

It is an amenable number.

21225201310232 is a deficient number, since it is larger than the sum of its proper divisors (18605410135408).

21225201310232 is a wasteful number, since it uses less digits than its factorization.

21225201310232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223932602 (or 2223932598 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 21225201310232 its reverse (23201310252212), we get a palindrome (44426511562444).

The spelling of 21225201310232 in words is "twenty-one trillion, two hundred twenty-five billion, two hundred one million, three hundred ten thousand, two hundred thirty-two".