113101021 has 4 divisors (see below), whose sum is σ = 123382944. Its totient is φ = 102819100.

The previous prime is 113101019. The next prime is 113101057. The reversal of 113101021 is 120101311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113101021 - 2¹ = 113101019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113100989 and 113101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113101081) 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 3 ways as a sum of consecutive naturals, for example, 5140945 + ... + 5140966.

It is an arithmetic number, because the mean of its divisors is an integer number (30845736).

Almost surely, 2^113101021 is an apocalyptic number.

113101021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113101021 is a deficient number, since it is larger than the sum of its proper divisors (10281923).

113101021 is a wasteful number, since it uses less digits than its factorization.

113101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10281922.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 113101021 is about 10634.8963793730. The cubic root of 113101021 is about 483.6028391003.

Adding to 113101021 its reverse (120101311), we get a palindrome (233202332).

The spelling of 113101021 in words is "one hundred thirteen million, one hundred one thousand, twenty-one".