2213042021 has 2 divisors, whose sum is σ = 2213042022. Its totient is φ = 2213042020.

The previous prime is 2213042017. The next prime is 2213042053. The reversal of 2213042021 is 1202403122.

2213042021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1249622500 + 963419521 = 35350^2 + 31039^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213042021 - 2² = 2213042017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2213042071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106521010 + 1106521011.

It is an arithmetic number, because the mean of its divisors is an integer number (1106521011).

Almost surely, 2^2213042021 is an apocalyptic number.

It is an amenable number.

2213042021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2213042021 is an equidigital number, since it uses as much as digits as its factorization.

2213042021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2213042021 is about 47042.9805709630. The cubic root of 2213042021 is about 1303.1564365865.

Adding to 2213042021 its reverse (1202403122), we get a palindrome (3415445143).

The spelling of 2213042021 in words is "two billion, two hundred thirteen million, forty-two thousand, twenty-one".