40020021233 has 4 divisors (see below), whose sum is σ = 42126338160. Its totient is φ = 37913704308.

The previous prime is 40020021227. The next prime is 40020021263. The reversal of 40020021233 is 33212002004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40020021233 - 2⁶ = 40020021169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40020021263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053158435 + ... + 1053158472.

It is an arithmetic number, because the mean of its divisors is an integer number (10531584540).

Almost surely, 2^40020021233 is an apocalyptic number.

It is an amenable number.

40020021233 is a deficient number, since it is larger than the sum of its proper divisors (2106316927).

40020021233 is a wasteful number, since it uses less digits than its factorization.

40020021233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106316926.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 40020021233 its reverse (33212002004), we get a palindrome (73232023237).

The spelling of 40020021233 in words is "forty billion, twenty million, twenty-one thousand, two hundred thirty-three".