1151217120 has 48 divisors (see below), whose sum is σ = 3626335440. Its totient is φ = 306991104.

The previous prime is 1151217083. The next prime is 1151217131. The reversal of 1151217120 is 217121511.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198705 + ... + 1199664.

It is an arithmetic number, because the mean of its divisors is an integer number (75548655).

Almost surely, 2^1151217120 is an apocalyptic number.

1151217120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151217120 is an abundant number, since it is smaller than the sum of its proper divisors (2475118320).

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

1151217120 is a wasteful number, since it uses less digits than its factorization.

1151217120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398387 (or 2398379 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 21.

The square root of 1151217120 is about 33929.5906252934. The cubic root of 1151217120 is about 1048.0590355804.

Adding to 1151217120 its reverse (217121511), we get a palindrome (1368338631).

The spelling of 1151217120 in words is "one billion, one hundred fifty-one million, two hundred seventeen thousand, one hundred twenty".