39902110221221 has 8 divisors (see below), whose sum is σ = 40167585042624. Its totient is φ = 39636651484800.

The previous prime is 39902110221217. The next prime is 39902110221223. The reversal of 39902110221221 is 12212201120993.

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 39902110221221 - 2² = 39902110221217 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 (39902110221223) 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, 977270 + ... + 8986616.

It is an arithmetic number, because the mean of its divisors is an integer number (5020948130328).

Almost surely, 2^{39902110221221} is an apocalyptic number.

It is an amenable number.

39902110221221 is a deficient number, since it is larger than the sum of its proper divisors (265474821403).

39902110221221 is a wasteful number, since it uses less digits than its factorization.

39902110221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8042491.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 39902110221221 in words is "thirty-nine trillion, nine hundred two billion, one hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".