12020122231 has 4 divisors (see below), whose sum is σ = 12944747032. Its totient is φ = 11095497432.

The previous prime is 12020122229. The next prime is 12020122271. The reversal of 12020122231 is 13222102021.

It is a happy number.

12020122231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13222102021 = 5009 ⋅2639669.

It is a cyclic number.

It is not a de Polignac number, because 12020122231 - 2¹ = 12020122229 is a prime.

It is a super-2 number, since 2×12020122231² (a number of 21 digits) 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 (12020122271) 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, 462312381 + ... + 462312406.

It is an arithmetic number, because the mean of its divisors is an integer number (3236186758).

Almost surely, 2^12020122231 is an apocalyptic number.

12020122231 is a deficient number, since it is larger than the sum of its proper divisors (924624801).

12020122231 is an equidigital number, since it uses as much as digits as its factorization.

12020122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924624800.

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

Adding to 12020122231 its reverse (13222102021), we get a palindrome (25242224252).

The spelling of 12020122231 in words is "twelve billion, twenty million, one hundred twenty-two thousand, two hundred thirty-one".