1122232140 has 72 divisors (see below), whose sum is σ = 3521503440. Its totient is φ = 288941184.

The previous prime is 1122232129. The next prime is 1122232141. The reversal of 1122232140 is 412322211.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1122232141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102274 + ... + 112713.

It is an arithmetic number, because the mean of its divisors is an integer number (48909770).

Almost surely, 2^1122232140 is an apocalyptic number.

1122232140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122232140 is an abundant number, since it is smaller than the sum of its proper divisors (2399271300).

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

1122232140 is a wasteful number, since it uses less digits than its factorization.

1122232140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215031 (or 215026 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1122232140 is about 33499.7334317752. The cubic root of 1122232140 is about 1039.1882657569.

Adding to 1122232140 its reverse (412322211), we get a palindrome (1534554351).

The spelling of 1122232140 in words is "one billion, one hundred twenty-two million, two hundred thirty-two thousand, one hundred forty".