1113133021 has 32 divisors (see below), whose sum is σ = 1582495488. Its totient is φ = 753546240.

The previous prime is 1113133009. The next prime is 1113133039. The reversal of 1113133021 is 1203313111.

It is a cyclic number.

It is not a de Polignac number, because 1113133021 - 2²⁵ = 1079578589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113132986 and 1113133004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113133421) 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, 15690 + ... + 49723.

It is an arithmetic number, because the mean of its divisors is an integer number (49452984).

Almost surely, 2^1113133021 is an apocalyptic number.

1113133021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1113133021 is a deficient number, since it is larger than the sum of its proper divisors (469362467).

1113133021 is a wasteful number, since it uses less digits than its factorization.

1113133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65461.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1113133021 is about 33363.6481968025. The cubic root of 1113133021 is about 1036.3720423670.

Adding to 1113133021 its reverse (1203313111), we get a palindrome (2316446132).

The spelling of 1113133021 in words is "one billion, one hundred thirteen million, one hundred thirty-three thousand, twenty-one".