789991223212 has 6 divisors (see below), whose sum is σ = 1382484640628. Its totient is φ = 394995611604.

The previous prime is 789991223207. The next prime is 789991223221. The reversal of 789991223212 is 212322199987.

It is a happy number.

It is a super-2 number, since 2×789991223212² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98748902898 + ... + 98748902905.

Almost surely, 2^789991223212 is an apocalyptic number.

It is an amenable number.

789991223212 is a deficient number, since it is larger than the sum of its proper divisors (592493417416).

789991223212 is a wasteful number, since it uses less digits than its factorization.

789991223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197497805807 (or 197497805805 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 55.

The spelling of 789991223212 in words is "seven hundred eighty-nine billion, nine hundred ninety-one million, two hundred twenty-three thousand, two hundred twelve".