2101232111 has 16 divisors (see below), whose sum is σ = 2368106496. Its totient is φ = 1847100000.

The previous prime is 2101232099. The next prime is 2101232123. The reversal of 2101232111 is 1112321012.

It is an interprime number because it is at equal distance from previous prime (2101232099) and next prime (2101232123).

It is a cyclic number.

It is not a de Polignac number, because 2101232111 - 2²² = 2097037807 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 (2101232171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800381 + ... + 803001.

It is an arithmetic number, because the mean of its divisors is an integer number (148006656).

Almost surely, 2^2101232111 is an apocalyptic number.

2101232111 is a deficient number, since it is larger than the sum of its proper divisors (266874385).

2101232111 is a wasteful number, since it uses less digits than its factorization.

2101232111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014.

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

The square root of 2101232111 is about 45839.1984114033. The cubic root of 2101232111 is about 1280.8295629554.

Adding to 2101232111 its reverse (1112321012), we get a palindrome (3213553123).

It can be divided in two parts, 210 and 1232111, that added together give a palindrome (1232321).

The spelling of 2101232111 in words is "two billion, one hundred one million, two hundred thirty-two thousand, one hundred eleven".