12122021223 has 112 divisors (see below), whose sum is σ = 21506042880. Its totient is φ = 6757515072.

The previous prime is 12122021221. The next prime is 12122021237. The reversal of 12122021223 is 32212022121.

It is not a de Polignac number, because 12122021223 - 2¹ = 12122021221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122021196 and 12122021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122021221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 4139986 + ... + 4142912.

It is an arithmetic number, because the mean of its divisors is an integer number (192018240).

Almost surely, 2^12122021223 is an apocalyptic number.

12122021223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12122021223 is a deficient number, since it is larger than the sum of its proper divisors (9384021657).

12122021223 is a wasteful number, since it uses less digits than its factorization.

12122021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000 (or 2985 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12122021223 its reverse (32212022121), we get a palindrome (44334043344).

It can be divided in two parts, 121220212 and 23, that added together give a triangular number (121220235 = T₁₅₅₇₀).

The spelling of 12122021223 in words is "twelve billion, one hundred twenty-two million, twenty-one thousand, two hundred twenty-three".