12121123222 has 16 divisors (see below), whose sum is σ = 19583681040. Its totient is φ = 5593391712.

The previous prime is 12121123213. The next prime is 12121123237. The reversal of 12121123222 is 22232112121.

It is a super-2 number, since 2×12121123222² (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 12121123222.

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, 124533 + ... + 199375.

It is an arithmetic number, because the mean of its divisors is an integer number (1223980065).

Almost surely, 2^12121123222 is an apocalyptic number.

12121123222 is a deficient number, since it is larger than the sum of its proper divisors (7462557818).

12121123222 is a wasteful number, since it uses less digits than its factorization.

12121123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81087.

The product of its digits is 192, while the sum is 19.

Adding to 12121123222 its reverse (22232112121), we get a palindrome (34353235343).

The spelling of 12121123222 in words is "twelve billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred twenty-two".