21202124332 has 12 divisors (see below), whose sum is σ = 37117234000. Its totient is φ = 10597200336.

The previous prime is 21202124329. The next prime is 21202124357. The reversal of 21202124332 is 23342120212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953088 + ... + 975079.

Almost surely, 2^21202124332 is an apocalyptic number.

It is an amenable number.

21202124332 is a deficient number, since it is larger than the sum of its proper divisors (15915109668).

21202124332 is a wasteful number, since it uses less digits than its factorization.

21202124332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930920 (or 1930918 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21202124332 its reverse (23342120212), we get a palindrome (44544244544).

The spelling of 21202124332 in words is "twenty-one billion, two hundred two million, one hundred twenty-four thousand, three hundred thirty-two".