40012341021 has 6 divisors (see below), whose sum is σ = 57795603710. Its totient is φ = 26674894008.

The previous prime is 40012341007. The next prime is 40012341079. The reversal of 40012341021 is 12014321004.

40012341021 is a `hidden beast` number, since 400 + 1 + 234 + 10 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28590075396 + 11422265625 = 169086^2 + 106875^2 .

It is not a de Polignac number, because 40012341021 - 2⁹ = 40012340509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40012340985 and 40012341003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40012341121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2222907826 + ... + 2222907843.

Almost surely, 2^40012341021 is an apocalyptic number.

It is an amenable number.

40012341021 is a deficient number, since it is larger than the sum of its proper divisors (17783262689).

40012341021 is a wasteful number, since it uses less digits than its factorization.

40012341021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445815675 (or 4445815672 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 40012341021 its reverse (12014321004), we get a palindrome (52026662025).

It can be divided in two parts, 400123 and 41021, that added together give a palindrome (441144).

The spelling of 40012341021 in words is "forty billion, twelve million, three hundred forty-one thousand, twenty-one".