40232321201021 has 4 divisors (see below), whose sum is σ = 40588359441852. Its totient is φ = 39876282960192.

The previous prime is 40232321200997. The next prime is 40232321201027. The reversal of 40232321201021 is 12010212323204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8521063075396 + 31711258125625 = 2919086^2 + 5631275^2 .

It is a cyclic number.

It is not a de Polignac number, because 40232321201021 - 2³⁸ = 39957443294077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40232321201027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178019120246 + ... + 178019120471.

It is an arithmetic number, because the mean of its divisors is an integer number (10147089860463).

Almost surely, 2^{40232321201021} is an apocalyptic number.

It is an amenable number.

40232321201021 is a deficient number, since it is larger than the sum of its proper divisors (356038240831).

40232321201021 is a wasteful number, since it uses less digits than its factorization.

40232321201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356038240830.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 40232321201021 its reverse (12010212323204), we get a palindrome (52242533524225).

The spelling of 40232321201021 in words is "forty trillion, two hundred thirty-two billion, three hundred twenty-one million, two hundred one thousand, twenty-one".