2211001123 has 4 divisors (see below), whose sum is σ = 2216131488. Its totient is φ = 2205870760.

The previous prime is 2211001103. The next prime is 2211001129. The reversal of 2211001123 is 3211001122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211001123 is a prime.

It is a super-2 number, since 2×2211001123² = 9777051931814522258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211001129) 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, 2564536 + ... + 2565397.

It is an arithmetic number, because the mean of its divisors is an integer number (554032872).

Almost surely, 2^2211001123 is an apocalyptic number.

2211001123 is a deficient number, since it is larger than the sum of its proper divisors (5130365).

2211001123 is an equidigital number, since it uses as much as digits as its factorization.

2211001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5130364.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2211001123 is about 47021.2837234374. The cubic root of 2211001123 is about 1302.7557170739.

Adding to 2211001123 its reverse (3211001122), we get a palindrome (5422002245).

Subtracting 2211001123 from its reverse (3211001122), we obtain a palindrome (999999999).

The spelling of 2211001123 in words is "two billion, two hundred eleven million, one thousand, one hundred twenty-three".