12121424422 has 16 divisors (see below), whose sum is σ = 19297425312. Its totient is φ = 5690643840.

The previous prime is 12121424411. The next prime is 12121424431. The reversal of 12121424422 is 22442412121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409098 + ... + 437725.

It is an arithmetic number, because the mean of its divisors is an integer number (1206089082).

Almost surely, 2^12121424422 is an apocalyptic number.

12121424422 is a deficient number, since it is larger than the sum of its proper divisors (7176000890).

12121424422 is a wasteful number, since it uses less digits than its factorization.

12121424422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847263.

The product of its digits is 2048, while the sum is 25.

Adding to 12121424422 its reverse (22442412121), we get a palindrome (34563836543).

The spelling of 12121424422 in words is "twelve billion, one hundred twenty-one million, four hundred twenty-four thousand, four hundred twenty-two".