21322132307 has 8 divisors (see below), whose sum is σ = 24781171200. Its totient is φ = 17966348424.

The previous prime is 21322132303. The next prime is 21322132319. The reversal of 21322132307 is 70323122312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21322132307 - 2² = 21322132303 is a prime.

It is a super-2 number, since 2×21322132307² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21322132303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25813307 + ... + 25814132.

It is an arithmetic number, because the mean of its divisors is an integer number (3097646400).

Almost surely, 2^21322132307 is an apocalyptic number.

21322132307 is a deficient number, since it is larger than the sum of its proper divisors (3459038893).

21322132307 is an equidigital number, since it uses as much as digits as its factorization.

21322132307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51627505.

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 21322132307 its reverse (70323122312), we get a palindrome (91645254619).

The spelling of 21322132307 in words is "twenty-one billion, three hundred twenty-two million, one hundred thirty-two thousand, three hundred seven".