12121210222 has 16 divisors (see below), whose sum is σ = 21001455792. Its totient is φ = 5185544320.

The previous prime is 12121210217. The next prime is 12121210229. The reversal of 12121210222 is 22201212121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12121210196 and 12121210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121210229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16204453 + ... + 16205200.

It is an arithmetic number, because the mean of its divisors is an integer number (1312590987).

Almost surely, 2^12121210222 is an apocalyptic number.

12121210222 is a deficient number, since it is larger than the sum of its proper divisors (8880245570).

12121210222 is a wasteful number, since it uses less digits than its factorization.

12121210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32409683.

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

Adding to 12121210222 its reverse (22201212121), we get a palindrome (34322422343).

The spelling of 12121210222 in words is "twelve billion, one hundred twenty-one million, two hundred ten thousand, two hundred twenty-two".