40212221544321 has 24 divisors (see below), whose sum is σ = 57026041930080. Its totient is φ = 25135365491712.

The previous prime is 40212221544301. The next prime is 40212221544329. The reversal of 40212221544321 is 12344512221204.

It is not a de Polignac number, because 40212221544321 - 2²³ = 40212213155713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40212221544329) 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 23 ways as a sum of consecutive naturals, for example, 36953196 + ... + 38025821.

It is an arithmetic number, because the mean of its divisors is an integer number (2376085080420).

Almost surely, 2^{40212221544321} is an apocalyptic number.

It is an amenable number.

40212221544321 is a deficient number, since it is larger than the sum of its proper divisors (16813820385759).

40212221544321 is an equidigital number, since it uses as much as digits as its factorization.

40212221544321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74979233 (or 74979136 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 40212221544321 its reverse (12344512221204), we get a palindrome (52556733765525).

The spelling of 40212221544321 in words is "forty trillion, two hundred twelve billion, two hundred twenty-one million, five hundred forty-four thousand, three hundred twenty-one".