21324737700321 has 32 divisors (see below), whose sum is σ = 33078652992000. Its totient is φ = 12076333543680.

The previous prime is 21324737700289. The next prime is 21324737700349. The reversal of 21324737700321 is 12300773742312.

It is not a de Polignac number, because 21324737700321 - 2⁵ = 21324737700289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21324737700391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136655871 + ... + 136811828.

It is an arithmetic number, because the mean of its divisors is an integer number (1033707906000).

Almost surely, 2^{21324737700321} is an apocalyptic number.

It is an amenable number.

21324737700321 is a deficient number, since it is larger than the sum of its proper divisors (11753915291679).

21324737700321 is a wasteful number, since it uses less digits than its factorization.

21324737700321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273467869.

The product of its (nonzero) digits is 296352, while the sum is 42.

The spelling of 21324737700321 in words is "twenty-one trillion, three hundred twenty-four billion, seven hundred thirty-seven million, seven hundred thousand, three hundred twenty-one".