2111421239 has 4 divisors (see below), whose sum is σ = 2162919360. Its totient is φ = 2059923120.

The previous prime is 2111421209. The next prime is 2111421271. The reversal of 2111421239 is 9321241112.

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

It is a cyclic number.

It is not a de Polignac number, because 2111421239 - 2¹⁶ = 2111355703 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 (2111421209) 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, 25748999 + ... + 25749080.

It is an arithmetic number, because the mean of its divisors is an integer number (540729840).

Almost surely, 2^2111421239 is an apocalyptic number.

2111421239 is a deficient number, since it is larger than the sum of its proper divisors (51498121).

2111421239 is an equidigital number, since it uses as much as digits as its factorization.

2111421239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51498120.

The product of its digits is 864, while the sum is 26.

The square root of 2111421239 is about 45950.2039059676. The cubic root of 2111421239 is about 1282.8965245883.

The spelling of 2111421239 in words is "two billion, one hundred eleven million, four hundred twenty-one thousand, two hundred thirty-nine".