1211112992 has 48 divisors (see below), whose sum is σ = 2411345664. Its totient is φ = 598752000.

The previous prime is 1211112961. The next prime is 1211113003. The reversal of 1211112992 is 2992111121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221617 + ... + 1222607.

It is an arithmetic number, because the mean of its divisors is an integer number (50236368).

Almost surely, 2^1211112992 is an apocalyptic number.

It is an amenable number.

1211112992 is a deficient number, since it is larger than the sum of its proper divisors (1200232672).

1211112992 is a wasteful number, since it uses less digits than its factorization.

1211112992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1385 counting only the distinct ones).

The product of its digits is 648, while the sum is 29.

The square root of 1211112992 is about 34801.0487198303. The cubic root of 1211112992 is about 1065.9288602679.

The spelling of 1211112992 in words is "one billion, two hundred eleven million, one hundred twelve thousand, nine hundred ninety-two".