1121311092 has 48 divisors (see below), whose sum is σ = 3022149312. Its totient is φ = 319802880.

The previous prime is 1121311073. The next prime is 1121311097. The reversal of 1121311092 is 2901131211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121311097) 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, 247603 + ... + 252090.

It is an arithmetic number, because the mean of its divisors is an integer number (62961444).

Almost surely, 2^1121311092 is an apocalyptic number.

1121311092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121311092 is an abundant number, since it is smaller than the sum of its proper divisors (1900838220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121311092 is a wasteful number, since it uses less digits than its factorization.

1121311092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499728 (or 499726 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 1121311092 is about 33485.9835154950. The cubic root of 1121311092 is about 1038.9038907717.

It can be divided in two parts, 1121 and 311092, that added together give a palindrome (312213).

The spelling of 1121311092 in words is "one billion, one hundred twenty-one million, three hundred eleven thousand, ninety-two".