1121311140 has 24 divisors (see below), whose sum is σ = 3139671360. Its totient is φ = 299016288.

The previous prime is 1121311133. The next prime is 1121311141. The reversal of 1121311140 is 411131211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1121311141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9344200 + ... + 9344319.

It is an arithmetic number, because the mean of its divisors is an integer number (130819640).

Almost surely, 2^1121311140 is an apocalyptic number.

1121311140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121311140 is an abundant number, since it is smaller than the sum of its proper divisors (2018360220).

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

1121311140 is a wasteful number, since it uses less digits than its factorization.

1121311140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18688531 (or 18688529 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1121311140 is about 33485.9842322127. The cubic root of 1121311140 is about 1038.9039055958.

Adding to 1121311140 its reverse (411131211), we get a palindrome (1532442351).

The spelling of 1121311140 in words is "one billion, one hundred twenty-one million, three hundred eleven thousand, one hundred forty".