20321130244 has 24 divisors (see below), whose sum is σ = 35637094080. Its totient is φ = 10139127264.

The previous prime is 20321130229. The next prime is 20321130253. The reversal of 20321130244 is 44203112302.

It is a super-2 number, since 2×20321130244² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7544562 + ... + 7547254.

It is an arithmetic number, because the mean of its divisors is an integer number (1484878920).

Almost surely, 2^20321130244 is an apocalyptic number.

It is an amenable number.

20321130244 is a deficient number, since it is larger than the sum of its proper divisors (15315963836).

20321130244 is a wasteful number, since it uses less digits than its factorization.

20321130244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5979 (or 5977 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20321130244 its reverse (44203112302), we get a palindrome (64524242546).

The spelling of 20321130244 in words is "twenty billion, three hundred twenty-one million, one hundred thirty thousand, two hundred forty-four".