121211201222 has 16 divisors (see below), whose sum is σ = 184820914080. Its totient is φ = 59608855872.

The previous prime is 121211201173. The next prime is 121211201227. The reversal of 121211201222 is 222102112121.

It is a self number, because there is not a number n which added to its sum of digits gives 121211201222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211201227) 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, 1103873 + ... + 1208700.

It is an arithmetic number, because the mean of its divisors is an integer number (11551307130).

Almost surely, 2^121211201222 is an apocalyptic number.

121211201222 is a deficient number, since it is larger than the sum of its proper divisors (63609712858).

121211201222 is a wasteful number, since it uses less digits than its factorization.

121211201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313007.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121211201222 its reverse (222102112121), we get a palindrome (343313313343).

The spelling of 121211201222 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred one thousand, two hundred twenty-two".