2211901 has 4 divisors (see below), whose sum is σ = 2217600. Its totient is φ = 2206204.

The previous prime is 2211893. The next prime is 2211919. The reversal of 2211901 is 1091122.

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 2211901 - 2³ = 2211893 is a prime.

It is an Ulam number.

It is a Duffinian number.

2211901 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211931) 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, 2221 + ... + 3058.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

2^2211901 is an apocalyptic number.

It is an amenable number.

2211901 is a deficient number, since it is larger than the sum of its proper divisors (5699).

2211901 is an equidigital number, since it uses as much as digits as its factorization.

2211901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5698.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 2211901 is about 1487.2461127870. The cubic root of 2211901 is about 130.2932433537.

The spelling of 2211901 in words is "two million, two hundred eleven thousand, nine hundred one".