1113132021 has 32 divisors (see below), whose sum is σ = 1530067968. Its totient is φ = 719646720.

The previous prime is 1113132017. The next prime is 1113132029. The reversal of 1113132021 is 1202313111.

It is a happy number.

It is not a de Polignac number, because 1113132021 - 2² = 1113132017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113132029) 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, 4331125 + ... + 4331381.

It is an arithmetic number, because the mean of its divisors is an integer number (47814624).

Almost surely, 2^1113132021 is an apocalyptic number.

It is an amenable number.

1113132021 is a deficient number, since it is larger than the sum of its proper divisors (416935947).

1113132021 is a wasteful number, since it uses less digits than its factorization.

1113132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1113132021 is about 33363.6332104284. The cubic root of 1113132021 is about 1036.3717320201.

Adding to 1113132021 its reverse (1202313111), we get a palindrome (2315445132).

The spelling of 1113132021 in words is "one billion, one hundred thirteen million, one hundred thirty-two thousand, twenty-one".