201222311 has 2 divisors, whose sum is σ = 201222312. Its totient is φ = 201222310.

The previous prime is 201222283. The next prime is 201222337. The reversal of 201222311 is 113222102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201222311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201222011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611155 + 100611156.

It is an arithmetic number, because the mean of its divisors is an integer number (100611156).

Almost surely, 2^201222311 is an apocalyptic number.

201222311 is a deficient number, since it is larger than the sum of its proper divisors (1).

201222311 is an equidigital number, since it uses as much as digits as its factorization.

201222311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 201222311 is about 14185.2850165233. The cubic root of 201222311 is about 585.9924818583.

Adding to 201222311 its reverse (113222102), we get a palindrome (314444413).

The spelling of 201222311 in words is "two hundred one million, two hundred twenty-two thousand, three hundred eleven".