21232413122 has 4 divisors (see below), whose sum is σ = 31848619686. Its totient is φ = 10616206560.

The previous prime is 21232413101. The next prime is 21232413149. The reversal of 21232413122 is 22131423212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15244593961 + 5987819161 = 123469^2 + 77381^2 .

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 as a sum of consecutive naturals, namely, 5308103279 + ... + 5308103282.

Almost surely, 2^21232413122 is an apocalyptic number.

21232413122 is a deficient number, since it is larger than the sum of its proper divisors (10616206564).

21232413122 is a wasteful number, since it uses less digits than its factorization.

21232413122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10616206563.

The product of its digits is 1152, while the sum is 23.

Adding to 21232413122 its reverse (22131423212), we get a palindrome (43363836334).

The spelling of 21232413122 in words is "twenty-one billion, two hundred thirty-two million, four hundred thirteen thousand, one hundred twenty-two".