992123111 has 16 divisors (see below), whose sum is σ = 1210023936. Its totient is φ = 794054016.

The previous prime is 992123051. The next prime is 992123117. The reversal of 992123111 is 111321299.

It is a de Polignac number, because none of the positive numbers 2^k-992123111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992123117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17711 + ... + 47936.

It is an arithmetic number, because the mean of its divisors is an integer number (75626496).

Almost surely, 2^992123111 is an apocalyptic number.

992123111 is a deficient number, since it is larger than the sum of its proper divisors (217900825).

992123111 is a wasteful number, since it uses less digits than its factorization.

992123111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65798.

The product of its digits is 972, while the sum is 29.

The square root of 992123111 is about 31497.9858244936. The cubic root of 992123111 is about 997.3674460747.

The spelling of 992123111 in words is "nine hundred ninety-two million, one hundred twenty-three thousand, one hundred eleven".