12220121122 has 64 divisors (see below), whose sum is σ = 21232834560. Its totient is φ = 5230117200.

The previous prime is 12220121117. The next prime is 12220121129. The reversal of 12220121122 is 22112102221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12220121096 and 12220121105.

It is not an unprimeable number, because it can be changed into a prime (12220121129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19004533 + ... + 19005175.

It is an arithmetic number, because the mean of its divisors is an integer number (331763040).

Almost surely, 2^12220121122 is an apocalyptic number.

12220121122 is a deficient number, since it is larger than the sum of its proper divisors (9012713438).

12220121122 is an equidigital number, since it uses as much as digits as its factorization.

12220121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 750 counting only the distinct ones).

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

Adding to 12220121122 its reverse (22112102221), we get a palindrome (34332223343).

The spelling of 12220121122 in words is "twelve billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twenty-two".