201233101 has 2 divisors, whose sum is σ = 201233102. Its totient is φ = 201233100.

The previous prime is 201233089. The next prime is 201233111. The reversal of 201233101 is 101332102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197430601 + 3802500 = 14051^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 201233101 - 2⁵ = 201233069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201233111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100616550 + 100616551.

It is an arithmetic number, because the mean of its divisors is an integer number (100616551).

Almost surely, 2^201233101 is an apocalyptic number.

It is an amenable number.

201233101 is a deficient number, since it is larger than the sum of its proper divisors (1).

201233101 is an equidigital number, since it uses as much as digits as its factorization.

201233101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 201233101 is about 14185.6653351191. The cubic root of 201233101 is about 586.0029557563.

Adding to 201233101 its reverse (101332102), we get a palindrome (302565203).

Subtracting from 201233101 its reverse (101332102), we obtain a palindrome (99900999).

The spelling of 201233101 in words is "two hundred one million, two hundred thirty-three thousand, one hundred one".