12012212422 has 8 divisors (see below), whose sum is σ = 20592364176. Its totient is φ = 5148091032.

The previous prime is 12012212353. The next prime is 12012212437. The reversal of 12012212422 is 22421221021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12012212422² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12012212422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429007573 + ... + 429007600.

It is an arithmetic number, because the mean of its divisors is an integer number (2574045522).

Almost surely, 2^12012212422 is an apocalyptic number.

12012212422 is a deficient number, since it is larger than the sum of its proper divisors (8580151754).

12012212422 is an equidigital number, since it uses as much as digits as its factorization.

12012212422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858015182.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12012212422 its reverse (22421221021), we get a palindrome (34433433443).

The spelling of 12012212422 in words is "twelve billion, twelve million, two hundred twelve thousand, four hundred twenty-two".