201203221 has 2 divisors, whose sum is σ = 201203222. Its totient is φ = 201203220.

The previous prime is 201203213. The next prime is 201203227. The reversal of 201203221 is 122302102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152399025 + 48804196 = 12345^2 + 6986^2 .

It is a cyclic number.

It is not a de Polignac number, because 201203221 - 2³ = 201203213 is a prime.

It is a super-2 number, since 2×201203221² = 80965472281549682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201203227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100601610 + 100601611.

It is an arithmetic number, because the mean of its divisors is an integer number (100601611).

Almost surely, 2^201203221 is an apocalyptic number.

It is an amenable number.

201203221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201203221 is an equidigital number, since it uses as much as digits as its factorization.

201203221 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 201203221 is about 14184.6121201815. The cubic root of 201203221 is about 585.9739501985.

Adding to 201203221 its reverse (122302102), we get a palindrome (323505323).

The spelling of 201203221 in words is "two hundred one million, two hundred three thousand, two hundred twenty-one".