2130221231 has 4 divisors (see below), whose sum is σ = 2133152112. Its totient is φ = 2127290352.

The previous prime is 2130221221. The next prime is 2130221257. The reversal of 2130221231 is 1321220312.

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 2130221231 - 2⁶ = 2130221167 is a prime.

It is a super-2 number, since 2×2130221231² = 9075684986006310722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130221201) 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, 1464350 + ... + 1465803.

It is an arithmetic number, because the mean of its divisors is an integer number (533288028).

Almost surely, 2^2130221231 is an apocalyptic number.

2130221231 is a deficient number, since it is larger than the sum of its proper divisors (2930881).

2130221231 is an equidigital number, since it uses as much as digits as its factorization.

2130221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930880.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2130221231 is about 46154.3197436600. The cubic root of 2130221231 is about 1286.6928953000.

Adding to 2130221231 its reverse (1321220312), we get a palindrome (3451441543).

The spelling of 2130221231 in words is "two billion, one hundred thirty million, two hundred twenty-one thousand, two hundred thirty-one".