1122115140 has 96 divisors (see below), whose sum is σ = 3496389120. Its totient is φ = 298771200.

The previous prime is 1122115139. The next prime is 1122115187. The reversal of 1122115140 is 415112211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 490800 + ... + 493080.

It is an arithmetic number, because the mean of its divisors is an integer number (36420720).

Almost surely, 2^1122115140 is an apocalyptic number.

1122115140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122115140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1748194560).

1122115140 is an abundant number, since it is smaller than the sum of its proper divisors (2374273980).

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

1122115140 is a wasteful number, since it uses less digits than its factorization.

1122115140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210 (or 3202 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1122115140 is about 33497.9871037052. The cubic root of 1122115140 is about 1039.1521504564.

Adding to 1122115140 its reverse (415112211), we get a palindrome (1537227351).

The spelling of 1122115140 in words is "one billion, one hundred twenty-two million, one hundred fifteen thousand, one hundred forty".