40221321101321 has 4 divisors (see below), whose sum is σ = 40221741092100. Its totient is φ = 40220901110544.

The previous prime is 40221321101239. The next prime is 40221321101359. The reversal of 40221321101321 is 12310112312204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12830867280400 + 27390453820921 = 3582020^2 + 5233589^2 .

It is a cyclic number.

It is not a de Polignac number, because 40221321101321 - 2²² = 40221316907017 is a prime.

It is a super-3 number, since 3×40221321101321³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40221321401321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209851706 + ... + 210043283.

It is an arithmetic number, because the mean of its divisors is an integer number (10055435273025).

Almost surely, 2^{40221321101321} is an apocalyptic number.

It is an amenable number.

40221321101321 is a deficient number, since it is larger than the sum of its proper divisors (419990779).

40221321101321 is an equidigital number, since it uses as much as digits as its factorization.

40221321101321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419990778.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 40221321101321 its reverse (12310112312204), we get a palindrome (52531433413525).

The spelling of 40221321101321 in words is "forty trillion, two hundred twenty-one billion, three hundred twenty-one million, one hundred one thousand, three hundred twenty-one".