2122111231 has 8 divisors (see below), whose sum is σ = 2206560384. Its totient is φ = 2038661760.

The previous prime is 2122111223. The next prime is 2122111237. The reversal of 2122111231 is 1321112212.

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 2122111231 - 2³ = 2122111223 is a prime.

It is a super-2 number, since 2×2122111231² = 9006712153472670722, 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 (2122111237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245590 + ... + 254083.

It is an arithmetic number, because the mean of its divisors is an integer number (275820048).

Almost surely, 2^2122111231 is an apocalyptic number.

2122111231 is a deficient number, since it is larger than the sum of its proper divisors (84449153).

2122111231 is a wasteful number, since it uses less digits than its factorization.

2122111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499841.

The product of its digits is 48, while the sum is 16.

The square root of 2122111231 is about 46066.3785314192. The cubic root of 2122111231 is about 1285.0579555686.

Adding to 2122111231 its reverse (1321112212), we get a palindrome (3443223443).

The spelling of 2122111231 in words is "two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred thirty-one".