2255101221 has 16 divisors (see below), whose sum is σ = 3192566400. Its totient is φ = 1411012608.

The previous prime is 2255101193. The next prime is 2255101223. The reversal of 2255101221 is 1221015522.

It is not a de Polignac number, because 2255101221 - 2²¹ = 2253004069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255101223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43276 + ... + 79893.

It is an arithmetic number, because the mean of its divisors is an integer number (199535400).

Almost surely, 2^2255101221 is an apocalyptic number.

It is an amenable number.

2255101221 is a deficient number, since it is larger than the sum of its proper divisors (937465179).

2255101221 is a wasteful number, since it uses less digits than its factorization.

2255101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123548.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2255101221 is about 47487.9060498565. The cubic root of 2255101221 is about 1311.3602445353.

Adding to 2255101221 its reverse (1221015522), we get a palindrome (3476116743).

The spelling of 2255101221 in words is "two billion, two hundred fifty-five million, one hundred one thousand, two hundred twenty-one".