2113002021 has 32 divisors (see below), whose sum is σ = 3062344320. Its totient is φ = 1288249344.

The previous prime is 2113002013. The next prime is 2113002053. The reversal of 2113002021 is 1202003112.

It is not a de Polignac number, because 2113002021 - 2³ = 2113002013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2113001988 and 2113002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113002011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2611465 + ... + 2612273.

It is an arithmetic number, because the mean of its divisors is an integer number (95698260).

Almost surely, 2^2113002021 is an apocalyptic number.

It is an amenable number.

2113002021 is a deficient number, since it is larger than the sum of its proper divisors (949342299).

2113002021 is a wasteful number, since it uses less digits than its factorization.

2113002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2113002021 is about 45967.4017212198. The cubic root of 2113002021 is about 1283.2166050162.

Adding to 2113002021 its reverse (1202003112), we get a palindrome (3315005133).

The spelling of 2113002021 in words is "two billion, one hundred thirteen million, two thousand, twenty-one".