20013123332 has 24 divisors (see below), whose sum is σ = 35189524440. Its totient is φ = 9959051520.

The previous prime is 20013123293. The next prime is 20013123343. The reversal of 20013123332 is 23332131002.

It can be written as a sum of positive squares in 4 ways, for example, as 14638276 + 19998485056 = 3826^2 + 141416^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089488 + ... + 1107704.

It is an arithmetic number, because the mean of its divisors is an integer number (1466230185).

Almost surely, 2^20013123332 is an apocalyptic number.

It is an amenable number.

20013123332 is a deficient number, since it is larger than the sum of its proper divisors (15176401108).

20013123332 is a wasteful number, since it uses less digits than its factorization.

20013123332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19511 (or 19509 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20013123332 its reverse (23332131002), we get a palindrome (43345254334).

The spelling of 20013123332 in words is "twenty billion, thirteen million, one hundred twenty-three thousand, three hundred thirty-two".