79991201222 has 8 divisors (see below), whose sum is σ = 125203619376. Its totient is φ = 38256661432.

The previous prime is 79991201219. The next prime is 79991201273. The reversal of 79991201222 is 22210219997.

It is a happy number.

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

It is a congruent number.

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, 869469533 + ... + 869469624.

It is an arithmetic number, because the mean of its divisors is an integer number (15650452422).

Almost surely, 2^79991201222 is an apocalyptic number.

79991201222 is a deficient number, since it is larger than the sum of its proper divisors (45212418154).

79991201222 is a wasteful number, since it uses less digits than its factorization.

79991201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738939182.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 79991201222 in words is "seventy-nine billion, nine hundred ninety-one million, two hundred one thousand, two hundred twenty-two".