40001104121221 has 8 divisors (see below), whose sum is σ = 40022714160000. Its totient is φ = 39979496749920.

The previous prime is 40001104121189. The next prime is 40001104121269. The reversal of 40001104121221 is 12212140110004.

It is a happy number.

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 40001104121221 - 2⁵ = 40001104121189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40001104121281) 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, 29705940 + ... + 31023298.

It is an arithmetic number, because the mean of its divisors is an integer number (5002839270000).

Almost surely, 2^{40001104121221} is an apocalyptic number.

It is an amenable number.

40001104121221 is a deficient number, since it is larger than the sum of its proper divisors (21610038779).

40001104121221 is a wasteful number, since it uses less digits than its factorization.

40001104121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333739.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 40001104121221 its reverse (12212140110004), we get a palindrome (52213244231225).

The spelling of 40001104121221 in words is "forty trillion, one billion, one hundred four million, one hundred twenty-one thousand, two hundred twenty-one".