1121310252 has 36 divisors (see below), whose sum is σ = 2851827160. Its totient is φ = 371475072.

The previous prime is 1121310217. The next prime is 1121310263. The reversal of 1121310252 is 2520131211.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 89677 + ... + 101412.

Almost surely, 2^1121310252 is an apocalyptic number.

1121310252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121310252 is an abundant number, since it is smaller than the sum of its proper divisors (1730516908).

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

1121310252 is a wasteful number, since it uses less digits than its factorization.

1121310252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191262 (or 191257 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1121310252 is about 33485.9709729313. The cubic root of 1121310252 is about 1038.9036313493.

Adding to 1121310252 its reverse (2520131211), we get a palindrome (3641441463).

The spelling of 1121310252 in words is "one billion, one hundred twenty-one million, three hundred ten thousand, two hundred fifty-two".