12121120222 has 4 divisors (see below), whose sum is σ = 18181680336. Its totient is φ = 6060560110.

The previous prime is 12121120217. The next prime is 12121120247. The reversal of 12121120222 is 22202112121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 12121120196 and 12121120205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030280054 + ... + 3030280057.

It is an arithmetic number, because the mean of its divisors is an integer number (4545420084).

Almost surely, 2^12121120222 is an apocalyptic number.

12121120222 is a deficient number, since it is larger than the sum of its proper divisors (6060560114).

12121120222 is an equidigital number, since it uses as much as digits as its factorization.

12121120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060560113.

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

Adding to 12121120222 its reverse (22202112121), we get a palindrome (34323232343).

The spelling of 12121120222 in words is "twelve billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twenty-two".