40121612131 has 2 divisors, whose sum is σ = 40121612132. Its totient is φ = 40121612130.

The previous prime is 40121611987. The next prime is 40121612149. The reversal of 40121612131 is 13121612104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40121612131 - 2¹³ = 40121603939 is a prime.

It is a super-2 number, since 2×40121612131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40121612431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20060806065 + 20060806066.

It is an arithmetic number, because the mean of its divisors is an integer number (20060806066).

Almost surely, 2^40121612131 is an apocalyptic number.

40121612131 is a deficient number, since it is larger than the sum of its proper divisors (1).

40121612131 is an equidigital number, since it uses as much as digits as its factorization.

40121612131 is an evil number, because the sum of its binary digits is even.

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

The spelling of 40121612131 in words is "forty billion, one hundred twenty-one million, six hundred twelve thousand, one hundred thirty-one".