1151121232 has 40 divisors (see below), whose sum is σ = 2379887360. Its totient is φ = 537788160.

The previous prime is 1151121229. The next prime is 1151121239. The reversal of 1151121232 is 2321211511.

It is a super-2 number, since 2×1151121232² = 2650160181522395648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151121239) 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, 3744 + ... + 48127.

It is an arithmetic number, because the mean of its divisors is an integer number (59497184).

Almost surely, 2^1151121232 is an apocalyptic number.

It is an amenable number.

1151121232 is an abundant number, since it is smaller than the sum of its proper divisors (1228766128).

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

1151121232 is a wasteful number, since it uses less digits than its factorization.

1151121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51971 (or 51965 counting only the distinct ones).

The product of its digits is 120, while the sum is 19.

The square root of 1151121232 is about 33928.1775519995. The cubic root of 1151121232 is about 1048.0299362115.

Adding to 1151121232 its reverse (2321211511), we get a palindrome (3472332743).

The spelling of 1151121232 in words is "one billion, one hundred fifty-one million, one hundred twenty-one thousand, two hundred thirty-two".