12221210122 has 8 divisors (see below), whose sum is σ = 19998343872. Its totient is φ = 5555095500.

The previous prime is 12221210059. The next prime is 12221210137. The reversal of 12221210122 is 22101212221.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 12221210096 and 12221210105.

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, 277754754 + ... + 277754797.

It is an arithmetic number, because the mean of its divisors is an integer number (2499792984).

Almost surely, 2^12221210122 is an apocalyptic number.

12221210122 is a deficient number, since it is larger than the sum of its proper divisors (7777133750).

12221210122 is a wasteful number, since it uses less digits than its factorization.

12221210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555509564.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221210122 its reverse (22101212221), we get a palindrome (34322422343).

The spelling of 12221210122 in words is "twelve billion, two hundred twenty-one million, two hundred ten thousand, one hundred twenty-two".