20121312041131 has 16 divisors (see below), whose sum is σ = 23080483996416. Its totient is φ = 17183362489056.

The previous prime is 20121312041081. The next prime is 20121312041137. The reversal of 20121312041131 is 13114021312102.

It is a cyclic number.

It is not a de Polignac number, because 20121312041131 - 2¹⁵ = 20121312008363 is a prime.

It is a super-2 number, since 2×20121312041131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20121312041137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3078960 + ... + 7051426.

It is an arithmetic number, because the mean of its divisors is an integer number (1442530249776).

Almost surely, 2^{20121312041131} is an apocalyptic number.

20121312041131 is a deficient number, since it is larger than the sum of its proper divisors (2959171955285).

20121312041131 is a wasteful number, since it uses less digits than its factorization.

20121312041131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975138.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 20121312041131 its reverse (13114021312102), we get a palindrome (33235333353233).

The spelling of 20121312041131 in words is "twenty trillion, one hundred twenty-one billion, three hundred twelve million, forty-one thousand, one hundred thirty-one".