1151213133 has 32 divisors (see below), whose sum is σ = 1789009920. Its totient is φ = 644857920.

The previous prime is 1151213113. The next prime is 1151213143. The reversal of 1151213133 is 3313121511.

It is not a de Polignac number, because 1151213133 - 2⁶ = 1151213069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151213113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520516 + ... + 522722.

It is an arithmetic number, because the mean of its divisors is an integer number (55906560).

Almost surely, 2^1151213133 is an apocalyptic number.

It is an amenable number.

1151213133 is a deficient number, since it is larger than the sum of its proper divisors (637796787).

1151213133 is a wasteful number, since it uses less digits than its factorization.

1151213133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697.

The product of its digits is 270, while the sum is 21.

The square root of 1151213133 is about 33929.5318712180. The cubic root of 1151213133 is about 1048.0578256678.

Adding to 1151213133 its reverse (3313121511), we get a palindrome (4464334644).

The spelling of 1151213133 in words is "one billion, one hundred fifty-one million, two hundred thirteen thousand, one hundred thirty-three".