2113013021 has 8 divisors (see below), whose sum is σ = 2438782464. Its totient is φ = 1793221200.

The previous prime is 2113013017. The next prime is 2113013027. The reversal of 2113013021 is 1203103112.

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 2113013021 - 2² = 2113013017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113012987 and 2113013005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113013027) 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 7 ways as a sum of consecutive naturals, for example, 1493645 + ... + 1495058.

It is an arithmetic number, because the mean of its divisors is an integer number (304847808).

Almost surely, 2^2113013021 is an apocalyptic number.

It is an amenable number.

2113013021 is a deficient number, since it is larger than the sum of its proper divisors (325769443).

2113013021 is a wasteful number, since it uses less digits than its factorization.

2113013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988811.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2113013021 is about 45967.5213710724. The cubic root of 2113013021 is about 1283.2188317625.

Adding to 2113013021 its reverse (1203103112), we get a palindrome (3316116133).

Subtracting from 2113013021 its reverse (1203103112), we obtain a palindrome (909909909).

The spelling of 2113013021 in words is "two billion, one hundred thirteen million, thirteen thousand, twenty-one".