39110021021 has 8 divisors (see below), whose sum is σ = 41592862080. Its totient is φ = 36669621888.

The previous prime is 39110021017. The next prime is 39110021023. The reversal of 39110021021 is 12012001193.

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 39110021021 - 2² = 39110021017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39110020984 and 39110021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39110021023) 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 7 ways as a sum of consecutive naturals, for example, 10608581 + ... + 10612266.

It is an arithmetic number, because the mean of its divisors is an integer number (5199107760).

Almost surely, 2^39110021021 is an apocalyptic number.

It is an amenable number.

39110021021 is a deficient number, since it is larger than the sum of its proper divisors (2482841059).

39110021021 is a wasteful number, since it uses less digits than its factorization.

39110021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21220963.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 39110021021 in words is "thirty-nine billion, one hundred ten million, twenty-one thousand, twenty-one".