2211220201 has 4 divisors (see below), whose sum is σ = 2227128400. Its totient is φ = 2195312004.

The previous prime is 2211220199. The next prime is 2211220213. The reversal of 2211220201 is 1020221122.

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 2211220201 - 2¹ = 2211220199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211220001) 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, 7953891 + ... + 7954168.

It is an arithmetic number, because the mean of its divisors is an integer number (556782100).

Almost surely, 2^2211220201 is an apocalyptic number.

It is an amenable number.

2211220201 is a deficient number, since it is larger than the sum of its proper divisors (15908199).

2211220201 is a wasteful number, since it uses less digits than its factorization.

2211220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15908198.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2211220201 is about 47023.6132278242. The cubic root of 2211220201 is about 1302.7987436902.

Adding to 2211220201 its reverse (1020221122), we get a palindrome (3231441323).

The spelling of 2211220201 in words is "two billion, two hundred eleven million, two hundred twenty thousand, two hundred one".