2220021613 has 2 divisors, whose sum is σ = 2220021614. Its totient is φ = 2220021612.

The previous prime is 2220021611. The next prime is 2220021623. The reversal of 2220021613 is 3161200222.

2220021613 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., 1718351209 + 501670404 = 41453^2 + 22398^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220021613 - 2¹ = 2220021611 is a prime.

Together with 2220021611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220021611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110010806 + 1110010807.

It is an arithmetic number, because the mean of its divisors is an integer number (1110010807).

Almost surely, 2^2220021613 is an apocalyptic number.

It is an amenable number.

2220021613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220021613 is an equidigital number, since it uses as much as digits as its factorization.

2220021613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2220021613 is about 47117.1053121900. The cubic root of 2220021613 is about 1304.5249834312.

Adding to 2220021613 its reverse (3161200222), we get a palindrome (5381221835).

The spelling of 2220021613 in words is "two billion, two hundred twenty million, twenty-one thousand, six hundred thirteen".