21223233232 has 20 divisors (see below), whose sum is σ = 41134802596. Its totient is φ = 10607800320.

The previous prime is 21223233217. The next prime is 21223233247. The reversal of 21223233232 is 23233232212.

It is an interprime number because it is at equal distance from previous prime (21223233217) and next prime (21223233247).

It can be written as a sum of positive squares in 2 ways, for example, as 10457925696 + 10765307536 = 102264^2 + 103756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21223233197 and 21223233206.

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, 192369 + ... + 281872.

Almost surely, 2^21223233232 is an apocalyptic number.

It is an amenable number.

21223233232 is a deficient number, since it is larger than the sum of its proper divisors (19911569364).

21223233232 is a wasteful number, since it uses less digits than its factorization.

21223233232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477046 (or 477040 counting only the distinct ones).

The product of its digits is 5184, while the sum is 25.

Adding to 21223233232 its reverse (23233232212), we get a palindrome (44456465444).

The spelling of 21223233232 in words is "twenty-one billion, two hundred twenty-three million, two hundred thirty-three thousand, two hundred thirty-two".