2221301309 has 2 divisors, whose sum is σ = 2221301310. Its totient is φ = 2221301308.

The previous prime is 2221301279. The next prime is 2221301359. The reversal of 2221301309 is 9031031222.

2221301309 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., 2188181284 + 33120025 = 46778^2 + 5755^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221301309 - 2¹² = 2221297213 is a prime.

It is a super-2 number, since 2×2221301309² = 9868359010730226962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221301359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110650654 + 1110650655.

It is an arithmetic number, because the mean of its divisors is an integer number (1110650655).

Almost surely, 2^2221301309 is an apocalyptic number.

It is an amenable number.

2221301309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221301309 is an equidigital number, since it uses as much as digits as its factorization.

2221301309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2221301309 is about 47130.6833071620. The cubic root of 2221301309 is about 1304.7755928142.

The spelling of 2221301309 in words is "two billion, two hundred twenty-one million, three hundred one thousand, three hundred nine".