2101223111 has 8 divisors (see below), whose sum is σ = 2271028704. Its totient is φ = 1932585120.

The previous prime is 2101223099. The next prime is 2101223123. The reversal of 2101223111 is 1113221012.

It is an interprime number because it is at equal distance from previous prime (2101223099) and next prime (2101223123).

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

It is a cyclic number.

It is not a de Polignac number, because 2101223111 - 2¹⁰ = 2101222087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101223611) 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, 288155 + ... + 295356.

It is an arithmetic number, because the mean of its divisors is an integer number (283878588).

Almost surely, 2^2101223111 is an apocalyptic number.

2101223111 is a deficient number, since it is larger than the sum of its proper divisors (169805593).

2101223111 is a wasteful number, since it uses less digits than its factorization.

2101223111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583801.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2101223111 is about 45839.1002420423. The cubic root of 2101223111 is about 1280.8277342692.

Adding to 2101223111 its reverse (1113221012), we get a palindrome (3214444123).

The spelling of 2101223111 in words is "two billion, one hundred one million, two hundred twenty-three thousand, one hundred eleven".