2221220201 has 2 divisors, whose sum is σ = 2221220202. Its totient is φ = 2221220200.

The previous prime is 2221220167. The next prime is 2221220207. The reversal of 2221220201 is 1020221222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1419480976 + 801739225 = 37676^2 + 28315^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221220201 - 2²² = 2217025897 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221220207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110610100 + 1110610101.

It is an arithmetic number, because the mean of its divisors is an integer number (1110610101).

Almost surely, 2^2221220201 is an apocalyptic number.

It is an amenable number.

2221220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221220201 is an equidigital number, since it uses as much as digits as its factorization.

2221220201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2221220201 is about 47129.8228407449. The cubic root of 2221220201 is about 1304.7597118790.

Adding to 2221220201 its reverse (1020221222), we get a palindrome (3241441423).

The spelling of 2221220201 in words is "two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred one".