40021113331 has 2 divisors, whose sum is σ = 40021113332. Its totient is φ = 40021113330.

The previous prime is 40021113289. The next prime is 40021113343. The reversal of 40021113331 is 13331112004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40021113331 - 2¹¹ = 40021111283 is a prime.

It is a super-2 number, since 2×40021113331² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40021113299 and 40021113308.

It is not a weakly prime, because it can be changed into another prime (40021113631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010556665 + 20010556666.

It is an arithmetic number, because the mean of its divisors is an integer number (20010556666).

Almost surely, 2^40021113331 is an apocalyptic number.

40021113331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40021113331 is an equidigital number, since it uses as much as digits as its factorization.

40021113331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 40021113331 its reverse (13331112004), we get a palindrome (53352225335).

The spelling of 40021113331 in words is "forty billion, twenty-one million, one hundred thirteen thousand, three hundred thirty-one".