12121202222 has 8 divisors (see below), whose sum is σ = 18453173736. Its totient is φ = 5970144312.

The previous prime is 12121202201. The next prime is 12121202279. The reversal of 12121202222 is 22220212121.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12121202222.

It is a congruent number.

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, 45228233 + ... + 45228500.

It is an arithmetic number, because the mean of its divisors is an integer number (2306646717).

Almost surely, 2^12121202222 is an apocalyptic number.

12121202222 is a deficient number, since it is larger than the sum of its proper divisors (6331971514).

12121202222 is an equidigital number, since it uses as much as digits as its factorization.

12121202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90456802.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12121202222 its reverse (22220212121), we get a palindrome (34341414343).

The spelling of 12121202222 in words is "twelve billion, one hundred twenty-one million, two hundred two thousand, two hundred twenty-two".