21023302232 has 16 divisors (see below), whose sum is σ = 39452086800. Its totient is φ = 10502745760.

The previous prime is 21023302219. The next prime is 21023302243. The reversal of 21023302232 is 23220332012.

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, 1103132 + ... + 1122027.

It is an arithmetic number, because the mean of its divisors is an integer number (2465755425).

Almost surely, 2^21023302232 is an apocalyptic number.

It is an amenable number.

21023302232 is a deficient number, since it is larger than the sum of its proper divisors (18428784568).

21023302232 is a wasteful number, since it uses less digits than its factorization.

21023302232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226346 (or 2226342 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21023302232 its reverse (23220332012), we get a palindrome (44243634244).

The spelling of 21023302232 in words is "twenty-one billion, twenty-three million, three hundred two thousand, two hundred thirty-two".