12121211110222 has 16 divisors (see below), whose sum is σ = 18241338753792. Its totient is φ = 6040765504440.

The previous prime is 12121211110193. The next prime is 12121211110331. The reversal of 12121211110222 is 22201111212121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12121211110222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50327947 + ... + 50568217.

It is an arithmetic number, because the mean of its divisors is an integer number (1140083672112).

Almost surely, 2^{12121211110222} is an apocalyptic number.

12121211110222 is a deficient number, since it is larger than the sum of its proper divisors (6120127643570).

12121211110222 is a wasteful number, since it uses less digits than its factorization.

12121211110222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322743.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12121211110222 its reverse (22201111212121), we get a palindrome (34322322322343).

The spelling of 12121211110222 in words is "twelve trillion, one hundred twenty-one billion, two hundred eleven million, one hundred ten thousand, two hundred twenty-two".