40221403022021 has 8 divisors (see below), whose sum is σ = 43439469876600. Its totient is φ = 37021066564032.

The previous prime is 40221403021951. The next prime is 40221403022027. The reversal of 40221403022021 is 12022030412204.

It can be written as a sum of positive squares in 4 ways, for example, as 1446994873921 + 38774408148100 = 1202911^2 + 6226910^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40221403022021 - 2³⁴ = 40204223152837 is a prime.

It is a super-2 number, since 2×40221403022021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221403022027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4432594430 + ... + 4432603503.

It is an arithmetic number, because the mean of its divisors is an integer number (5429933734575).

Almost surely, 2^{40221403022021} is an apocalyptic number.

It is an amenable number.

40221403022021 is a deficient number, since it is larger than the sum of its proper divisors (3218066854579).

40221403022021 is a wasteful number, since it uses less digits than its factorization.

40221403022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8865198295.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 40221403022021 its reverse (12022030412204), we get a palindrome (52243433434225).

The spelling of 40221403022021 in words is "forty trillion, two hundred twenty-one billion, four hundred three million, twenty-two thousand, twenty-one".