2221311201 has 4 divisors (see below), whose sum is σ = 2961748272. Its totient is φ = 1480874132.

The previous prime is 2221311199. The next prime is 2221311229. The reversal of 2221311201 is 1021131222.

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 2221311201 - 2¹ = 2221311199 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2221311901) 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, 370218531 + ... + 370218536.

It is an arithmetic number, because the mean of its divisors is an integer number (740437068).

Almost surely, 2^2221311201 is an apocalyptic number.

It is an amenable number.

2221311201 is a deficient number, since it is larger than the sum of its proper divisors (740437071).

2221311201 is an equidigital number, since it uses as much as digits as its factorization.

2221311201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740437070.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2221311201 is about 47130.7882492962. The cubic root of 2221311201 is about 1304.7775296400. Note that the first 3 decimals are identical.

Adding to 2221311201 its reverse (1021131222), we get a palindrome (3242442423).

The spelling of 2221311201 in words is "two billion, two hundred twenty-one million, three hundred eleven thousand, two hundred one".