2300021221 has 2 divisors, whose sum is σ = 2300021222. Its totient is φ = 2300021220.

The previous prime is 2300021203. The next prime is 2300021237. The reversal of 2300021221 is 1221200032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1176833025 + 1123188196 = 34305^2 + 33514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2300021221 - 2⁵ = 2300021189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2300021201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1150010610 + 1150010611.

It is an arithmetic number, because the mean of its divisors is an integer number (1150010611).

Almost surely, 2^2300021221 is an apocalyptic number.

It is an amenable number.

2300021221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2300021221 is an equidigital number, since it uses as much as digits as its factorization.

2300021221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2300021221 is about 47958.5364768359. The cubic root of 2300021221 is about 1320.0101814718.

Adding to 2300021221 its reverse (1221200032), we get a palindrome (3521221253).

The spelling of 2300021221 in words is "two billion, three hundred million, twenty-one thousand, two hundred twenty-one".