113020021 has 8 divisors (see below), whose sum is σ = 114730560. Its totient is φ = 111317952.

The previous prime is 113020013. The next prime is 113020031. The reversal of 113020021 is 120020311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113020021 - 2³ = 113020013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113020031) 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, 27901 + ... + 31693.

It is an arithmetic number, because the mean of its divisors is an integer number (14341320).

Almost surely, 2^113020021 is an apocalyptic number.

It is an amenable number.

113020021 is a deficient number, since it is larger than the sum of its proper divisors (1710539).

113020021 is an equidigital number, since it uses as much as digits as its factorization.

113020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 113020021 is about 10631.0874796514. The cubic root of 113020021 is about 483.4873636176.

Adding to 113020021 its reverse (120020311), we get a palindrome (233040332).

The spelling of 113020021 in words is "one hundred thirteen million, twenty thousand, twenty-one".