2113002221 has 4 divisors (see below), whose sum is σ = 2305093344. Its totient is φ = 1920911100.

The previous prime is 2113002211. The next prime is 2113002247. The reversal of 2113002221 is 1222003112.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-2113002221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2113002196 and 2113002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113002211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96045545 + ... + 96045566.

It is an arithmetic number, because the mean of its divisors is an integer number (576273336).

Almost surely, 2^2113002221 is an apocalyptic number.

It is an amenable number.

2113002221 is a deficient number, since it is larger than the sum of its proper divisors (192091123).

2113002221 is a wasteful number, since it uses less digits than its factorization.

2113002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192091122.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2113002221 is about 45967.4038966744. The cubic root of 2113002221 is about 1283.2166455026.

Adding to 2113002221 its reverse (1222003112), we get a palindrome (3335005333).

The spelling of 2113002221 in words is "two billion, one hundred thirteen million, two thousand, two hundred twenty-one".