2111113421 has 4 divisors (see below), whose sum is σ = 2111265600. Its totient is φ = 2110961244.

The previous prime is 2111113387. The next prime is 2111113451. The reversal of 2111113421 is 1243111112.

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 2111113421 - 2⁶ = 2111113357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2111113421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111113451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52931 + ... + 83808.

It is an arithmetic number, because the mean of its divisors is an integer number (527816400).

Almost surely, 2^2111113421 is an apocalyptic number.

It is an amenable number.

2111113421 is a deficient number, since it is larger than the sum of its proper divisors (152179).

2111113421 is a wasteful number, since it uses less digits than its factorization.

2111113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152178.

The product of its digits is 48, while the sum is 17.

The square root of 2111113421 is about 45946.8543101701. The cubic root of 2111113421 is about 1282.8341782996.

Adding to 2111113421 its reverse (1243111112), we get a palindrome (3354224533).

The spelling of 2111113421 in words is "two billion, one hundred eleven million, one hundred thirteen thousand, four hundred twenty-one".