79901212222 has 16 divisors (see below), whose sum is σ = 129834930960. Its totient is φ = 36877480536.

The previous prime is 79901212217. The next prime is 79901212247. The reversal of 79901212222 is 22221210997.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9087688 + ... + 9096475.

It is an arithmetic number, because the mean of its divisors is an integer number (8114683185).

Almost surely, 2^79901212222 is an apocalyptic number.

79901212222 is a deficient number, since it is larger than the sum of its proper divisors (49933718738).

79901212222 is a wasteful number, since it uses less digits than its factorization.

79901212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18184204 (or 18184178 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 79901212222 in words is "seventy-nine billion, nine hundred one million, two hundred twelve thousand, two hundred twenty-two".