40321233021 has 32 divisors (see below), whose sum is σ = 57171136000. Its totient is φ = 25205577408.

The previous prime is 40321233019. The next prime is 40321233041. The reversal of 40321233021 is 12033212304.

40321233021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40321233021 - 2¹ = 40321233019 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 (40321233041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6974310 + ... + 6980088.

It is an arithmetic number, because the mean of its divisors is an integer number (1786598000).

Almost surely, 2^40321233021 is an apocalyptic number.

It is an amenable number.

40321233021 is a deficient number, since it is larger than the sum of its proper divisors (16849902979).

40321233021 is a wasteful number, since it uses less digits than its factorization.

40321233021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 40321233021 its reverse (12033212304), we get a palindrome (52354445325).

The spelling of 40321233021 in words is "forty billion, three hundred twenty-one million, two hundred thirty-three thousand, twenty-one".