20113121333131 has 32 divisors (see below), whose sum is σ = 21345114945600. Its totient is φ = 18923931586560.

The previous prime is 20113121333093. The next prime is 20113121333147. The reversal of 20113121333131 is 13133312131102.

It is not a de Polignac number, because 20113121333131 - 2¹⁷ = 20113121202059 is a prime.

It is a super-2 number, since 2×20113121333131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20113121333096 and 20113121333105.

It is not an unprimeable number, because it can be changed into a prime (20113121333191) 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, 114302325 + ... + 114478153.

It is an arithmetic number, because the mean of its divisors is an integer number (667034842050).

Almost surely, 2^{20113121333131} is an apocalyptic number.

20113121333131 is a deficient number, since it is larger than the sum of its proper divisors (1231993612469).

20113121333131 is a wasteful number, since it uses less digits than its factorization.

20113121333131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176559.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 20113121333131 its reverse (13133312131102), we get a palindrome (33246433464233).

The spelling of 20113121333131 in words is "twenty trillion, one hundred thirteen billion, one hundred twenty-one million, three hundred thirty-three thousand, one hundred thirty-one".