1222011992 has 8 divisors (see below), whose sum is σ = 2291272500. Its totient is φ = 611005992.

The previous prime is 1222011977. The next prime is 1222012021. The reversal of 1222011992 is 2991102221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76375742 + ... + 76375757.

Almost surely, 2^1222011992 is an apocalyptic number.

It is an amenable number.

1222011992 is a deficient number, since it is larger than the sum of its proper divisors (1069260508).

1222011992 is a wasteful number, since it uses less digits than its factorization.

1222011992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152751505 (or 152751501 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1222011992 is about 34957.2881099207. The cubic root of 1222011992 is about 1069.1168046058.

The spelling of 1222011992 in words is "one billion, two hundred twenty-two million, eleven thousand, nine hundred ninety-two".