40530040221 has 16 divisors (see below), whose sum is σ = 62420597568. Its totient is φ = 23118739200.

The previous prime is 40530040211. The next prime is 40530040223. The reversal of 40530040221 is 12204003504.

It is not a de Polignac number, because 40530040221 - 2⁵ = 40530040189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40530040223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36122470 + ... + 36123591.

It is an arithmetic number, because the mean of its divisors is an integer number (3901287348).

Almost surely, 2^40530040221 is an apocalyptic number.

It is an amenable number.

40530040221 is a deficient number, since it is larger than the sum of its proper divisors (21890557347).

40530040221 is a wasteful number, since it uses less digits than its factorization.

40530040221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72246092.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 40530040221 its reverse (12204003504), we get a palindrome (52734043725).

The spelling of 40530040221 in words is "forty billion, five hundred thirty million, forty thousand, two hundred twenty-one".