12122031 has 4 divisors (see below), whose sum is σ = 16162712. Its totient is φ = 8081352.

The previous prime is 12122021. The next prime is 12122039. The reversal of 12122031 is 13022121.

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

It is not a de Polignac number, because 12122031 - 2¹¹ = 12119983 is a prime.

It is a super-2 number, since 2×12122031² = 293887271129922, 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 = 12121998 and 12122016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020336 + ... + 2020341.

It is an arithmetic number, because the mean of its divisors is an integer number (4040678).

Almost surely, 2^12122031 is an apocalyptic number.

12122031 is a deficient number, since it is larger than the sum of its proper divisors (4040681).

12122031 is an equidigital number, since it uses as much as digits as its factorization.

12122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040680.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12122031 is about 3481.6707196402. The cubic root of 12122031 is about 229.7162916474.

Adding to 12122031 its reverse (13022121), we get a palindrome (25144152).

The spelling of 12122031 in words is "twelve million, one hundred twenty-two thousand, thirty-one".