121112210211222 has 32 divisors (see below), whose sum is σ = 242423831716704. Its totient is φ = 40337504064000.

The previous prime is 121112210211053. The next prime is 121112210211281. The reversal of 121112210211222 is 222112012211121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198762222 + ... + 199370622.

It is an arithmetic number, because the mean of its divisors is an integer number (7575744741147).

Almost surely, 2^{121112210211222} is an apocalyptic number.

121112210211222 is an abundant number, since it is smaller than the sum of its proper divisors (121311621505482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121112210211222 is a wasteful number, since it uses less digits than its factorization.

121112210211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635664.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 121112210211222 its reverse (222112012211121), we get a palindrome (343224222422343).

The spelling of 121112210211222 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred ten million, two hundred eleven thousand, two hundred twenty-two".