21126226732 has 12 divisors (see below), whose sum is σ = 39814812016. Its totient is φ = 9750566160.

The previous prime is 21126226699. The next prime is 21126226813. The reversal of 21126226732 is 23762262112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203136744 + ... + 203136847.

Almost surely, 2^21126226732 is an apocalyptic number.

It is an amenable number.

21126226732 is a deficient number, since it is larger than the sum of its proper divisors (18688585284).

21126226732 is a wasteful number, since it uses less digits than its factorization.

21126226732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406273608 (or 406273606 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

Adding to 21126226732 its reverse (23762262112), we get a palindrome (44888488844).

The spelling of 21126226732 in words is "twenty-one billion, one hundred twenty-six million, two hundred twenty-six thousand, seven hundred thirty-two".