21322313133 has 64 divisors (see below), whose sum is σ = 33839769600. Its totient is φ = 11796744960.

The previous prime is 21322313123. The next prime is 21322313141. The reversal of 21322313133 is 33131322312.

It is not a de Polignac number, because 21322313133 - 2⁶ = 21322313069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322313123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13218235 + ... + 13219847.

It is an arithmetic number, because the mean of its divisors is an integer number (528746400).

Almost surely, 2^21322313133 is an apocalyptic number.

It is an amenable number.

21322313133 is a deficient number, since it is larger than the sum of its proper divisors (12517456467).

21322313133 is a wasteful number, since it uses less digits than its factorization.

21322313133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402.

The product of its digits is 1944, while the sum is 24.

Adding to 21322313133 its reverse (33131322312), we get a palindrome (54453635445).

The spelling of 21322313133 in words is "twenty-one billion, three hundred twenty-two million, three hundred thirteen thousand, one hundred thirty-three".