21200430232242 has 24 divisors (see below), whose sum is σ = 46340763432444. Its totient is φ = 7004271934464.

The previous prime is 21200430232211. The next prime is 21200430232277. The reversal of 21200430232242 is 24223203400212.

21200430232242 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 0 + 430 + 2 + 3 + 224 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19653891759441 + 1546538472801 = 4433271^2 + 1243599^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5211509823 + ... + 5211513890.

Almost surely, 2^{21200430232242} is an apocalyptic number.

21200430232242 is an abundant number, since it is smaller than the sum of its proper divisors (25140333200202).

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

21200430232242 is a wasteful number, since it uses less digits than its factorization.

21200430232242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10423023834 (or 10423023831 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 21200430232242 its reverse (24223203400212), we get a palindrome (45423633632454).

The spelling of 21200430232242 in words is "twenty-one trillion, two hundred billion, four hundred thirty million, two hundred thirty-two thousand, two hundred forty-two".