2130221311 has 4 divisors (see below), whose sum is σ = 2155886712. Its totient is φ = 2104555912.

The previous prime is 2130221267. The next prime is 2130221323. The reversal of 2130221311 is 1131220312.

2130221311 = T₇₁₂₃ + T₇₁₂₄ + ... + T₇₂₀₅.

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 2130221311 - 2²³ = 2121832703 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 (2130221341) 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, 12832576 + ... + 12832741.

It is an arithmetic number, because the mean of its divisors is an integer number (538971678).

Almost surely, 2^2130221311 is an apocalyptic number.

2130221311 is a deficient number, since it is larger than the sum of its proper divisors (25665401).

2130221311 is an equidigital number, since it uses as much as digits as its factorization.

2130221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25665400.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2130221311 is about 46154.3206103177. The cubic root of 2130221311 is about 1286.6929114071.

Adding to 2130221311 its reverse (1131220312), we get a palindrome (3261441623).

Subtracting from 2130221311 its reverse (1131220312), we obtain a palindrome (999000999).

The spelling of 2130221311 in words is "two billion, one hundred thirty million, two hundred twenty-one thousand, three hundred eleven".