20121313313032 has 32 divisors (see below), whose sum is σ = 37933178865120. Its totient is φ = 10005942372480.

The previous prime is 20121313313027. The next prime is 20121313313033. The reversal of 20121313313032 is 23031331312102.

It is a junction number, because it is equal to n+sod(n) for n = 20121313312988 and 20121313313006.

It is not an unprimeable number, because it can be changed into a prime (20121313313033) 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, 7841194 + ... + 10085977.

It is an arithmetic number, because the mean of its divisors is an integer number (1185411839535).

Almost surely, 2^{20121313313032} is an apocalyptic number.

It is an amenable number.

20121313313032 is a deficient number, since it is larger than the sum of its proper divisors (17811865552088).

20121313313032 is a wasteful number, since it uses less digits than its factorization.

20121313313032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17927941 (or 17927937 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20121313313032 its reverse (23031331312102), we get a palindrome (43152644625134).

The spelling of 20121313313032 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirteen million, three hundred thirteen thousand, thirty-two".