2121211319 has 4 divisors (see below), whose sum is σ = 2232854040. Its totient is φ = 2009568600.

The previous prime is 2121211289. The next prime is 2121211327. The reversal of 2121211319 is 9131121212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121211319 is a prime.

It is a super-2 number, since 2×2121211319² = 8999074919707439522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121211294 and 2121211303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121211349) 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, 55821332 + ... + 55821369.

It is an arithmetic number, because the mean of its divisors is an integer number (558213510).

Almost surely, 2^2121211319 is an apocalyptic number.

2121211319 is a deficient number, since it is larger than the sum of its proper divisors (111642721).

2121211319 is a wasteful number, since it uses less digits than its factorization.

2121211319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111642720.

The product of its digits is 216, while the sum is 23.

The square root of 2121211319 is about 46056.6099382054. The cubic root of 2121211319 is about 1284.8762807402.

The spelling of 2121211319 in words is "two billion, one hundred twenty-one million, two hundred eleven thousand, three hundred nineteen".