2201312221 has 4 divisors (see below), whose sum is σ = 2297021472. Its totient is φ = 2105602972.

The previous prime is 2201312219. The next prime is 2201312231. The reversal of 2201312221 is 1222131022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2201312221 - 2¹ = 2201312219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201312195 and 2201312204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201312231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47854591 + ... + 47854636.

It is an arithmetic number, because the mean of its divisors is an integer number (574255368).

Almost surely, 2^2201312221 is an apocalyptic number.

It is an amenable number.

2201312221 is a deficient number, since it is larger than the sum of its proper divisors (95709251).

2201312221 is an equidigital number, since it uses as much as digits as its factorization.

2201312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95709250.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2201312221 is about 46918.1438358339. The cubic root of 2201312221 is about 1300.8499808211.

Adding to 2201312221 its reverse (1222131022), we get a palindrome (3423443243).

The spelling of 2201312221 in words is "two billion, two hundred one million, three hundred twelve thousand, two hundred twenty-one".