39921212122 has 8 divisors (see below), whose sum is σ = 65325619872. Its totient is φ = 18146005500.

The previous prime is 39921212099. The next prime is 39921212143. The reversal of 39921212122 is 22121212993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907300254 + ... + 907300297.

It is an arithmetic number, because the mean of its divisors is an integer number (8165702484).

Almost surely, 2^39921212122 is an apocalyptic number.

39921212122 is a deficient number, since it is larger than the sum of its proper divisors (25404407750).

39921212122 is a wasteful number, since it uses less digits than its factorization.

39921212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814600564.

The product of its digits is 7776, while the sum is 34.

The spelling of 39921212122 in words is "thirty-nine billion, nine hundred twenty-one million, two hundred twelve thousand, one hundred twenty-two".