12231212022 has 24 divisors (see below), whose sum is σ = 26526263400. Its totient is φ = 4073177760.

The previous prime is 12231212011. The next prime is 12231212027. The reversal of 12231212022 is 22021213221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12231211986 and 12231212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231212027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305004 + ... + 342767.

It is an arithmetic number, because the mean of its divisors is an integer number (1105260975).

Almost surely, 2^12231212022 is an apocalyptic number.

12231212022 is an abundant number, since it is smaller than the sum of its proper divisors (14295051378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12231212022 is a wasteful number, since it uses less digits than its factorization.

12231212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648828 (or 648825 counting only the distinct ones).

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

Adding to 12231212022 its reverse (22021213221), we get a palindrome (34252425243).

The spelling of 12231212022 in words is "twelve billion, two hundred thirty-one million, two hundred twelve thousand, twenty-two".