2102221231 has 8 divisors (see below), whose sum is σ = 2294294400. Its totient is φ = 1910308440.

The previous prime is 2102221213. The next prime is 2102221243. The reversal of 2102221231 is 1321222012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102221231 - 2⁷ = 2102221103 is a prime.

It is a super-2 number, since 2×2102221231² = 8838668208134310722, 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 (2102221531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11811 + ... + 65908.

It is an arithmetic number, because the mean of its divisors is an integer number (286786800).

Almost surely, 2^2102221231 is an apocalyptic number.

2102221231 is a deficient number, since it is larger than the sum of its proper divisors (192073169).

2102221231 is a wasteful number, since it uses less digits than its factorization.

2102221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80189.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2102221231 is about 45849.9861613938. The cubic root of 2102221231 is about 1281.0305078189.

Adding to 2102221231 its reverse (1321222012), we get a palindrome (3423443243).

The spelling of 2102221231 in words is "two billion, one hundred two million, two hundred twenty-one thousand, two hundred thirty-one".