2211001 has 8 divisors (see below), whose sum is σ = 2426760. Its totient is φ = 2001792.

The previous prime is 2210993. The next prime is 2211019. The reversal of 2211001 is 1001122.

It can be written as a sum of positive squares in 4 ways, for example, as 251001 + 1960000 = 501^2 + 1400^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2211001 - 2³ = 2210993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916 + ... + 2293.

It is an arithmetic number, because the mean of its divisors is an integer number (303345).

2^2211001 is an apocalyptic number.

It is an amenable number.

2211001 is a deficient number, since it is larger than the sum of its proper divisors (215759).

2211001 is a wasteful number, since it uses less digits than its factorization.

2211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2211001 is about 1486.9435093506. The cubic root of 2211001 is about 130.2755692916.

Adding to 2211001 its reverse (1001122), we get a palindrome (3212123).

The spelling of 2211001 in words is "two million, two hundred eleven thousand, one".