21322134501 has 8 divisors (see below), whose sum is σ = 29122915584. Its totient is φ = 13868054880.

The previous prime is 21322134469. The next prime is 21322134557. The reversal of 21322134501 is 10543122312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21322134501 - 2⁵ = 21322134469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322134401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 86675221 + ... + 86675466.

It is an arithmetic number, because the mean of its divisors is an integer number (3640364448).

Almost surely, 2^21322134501 is an apocalyptic number.

It is an amenable number.

21322134501 is a deficient number, since it is larger than the sum of its proper divisors (7800781083).

21322134501 is a wasteful number, since it uses less digits than its factorization.

21322134501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173350731.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21322134501 its reverse (10543122312), we get a palindrome (31865256813).

The spelling of 21322134501 in words is "twenty-one billion, three hundred twenty-two million, one hundred thirty-four thousand, five hundred one".