2121334087 has 4 divisors (see below), whose sum is σ = 2121426216. Its totient is φ = 2121241960.

The previous prime is 2121334073. The next prime is 2121334139. The reversal of 2121334087 is 7804331212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2121334087 - 2²³ = 2112945479 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 (2121334027) 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, 21912 + ... + 68722.

It is an arithmetic number, because the mean of its divisors is an integer number (530356554).

Almost surely, 2^2121334087 is an apocalyptic number.

2121334087 is a deficient number, since it is larger than the sum of its proper divisors (92129).

2121334087 is an equidigital number, since it uses as much as digits as its factorization.

2121334087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92128.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2121334087 is about 46057.9427134995. The cubic root of 2121334087 is about 1284.9010682514.

Adding to 2121334087 its reverse (7804331212), we get a palindrome (9925665299).

The spelling of 2121334087 in words is "two billion, one hundred twenty-one million, three hundred thirty-four thousand, eighty-seven".