113089821 has 16 divisors (see below), whose sum is σ = 167986560. Its totient is φ = 67193280.

The previous prime is 113089819. The next prime is 113089841. The reversal of 113089821 is 128980311.

It is not a de Polignac number, because 113089821 - 2¹ = 113089819 is a prime.

It is a super-2 number, since 2×113089821² = 25578615227624082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113089841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48865 + ... + 51126.

It is an arithmetic number, because the mean of its divisors is an integer number (10499160).

Almost surely, 2^113089821 is an apocalyptic number.

It is an amenable number.

113089821 is a deficient number, since it is larger than the sum of its proper divisors (54896739).

113089821 is a wasteful number, since it uses less digits than its factorization.

113089821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100036.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 113089821 is about 10634.3697979711. The cubic root of 113089821 is about 483.5868754053.

It can be divided in two parts, 1130 and 89821, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 113089821 in words is "one hundred thirteen million, eighty-nine thousand, eight hundred twenty-one".