40421213221031 has 16 divisors (see below), whose sum is σ = 40624318800000. Its totient is φ = 40218371002368.

The previous prime is 40421213221009. The next prime is 40421213221079. The reversal of 40421213221031 is 13012231212404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40421213221031 - 2¹⁰ = 40421213220007 is a prime.

It is a super-2 number, since 2×40421213221031² (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 (40421213221331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3003724655 + ... + 3003738111.

It is an arithmetic number, because the mean of its divisors is an integer number (2539019925000).

Almost surely, 2^{40421213221031} is an apocalyptic number.

40421213221031 is a deficient number, since it is larger than the sum of its proper divisors (203105578969).

40421213221031 is a wasteful number, since it uses less digits than its factorization.

40421213221031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22138.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 40421213221031 its reverse (13012231212404), we get a palindrome (53433444433435).

The spelling of 40421213221031 in words is "forty trillion, four hundred twenty-one billion, two hundred thirteen million, two hundred twenty-one thousand, thirty-one".