121121212101222 has 64 divisors (see below), whose sum is σ = 249045302398464. Its totient is φ = 39242180517120.

The previous prime is 121121212101193. The next prime is 121121212101247. The reversal of 121121212101222 is 222101212121121.

121121212101222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1523861722 + ... + 1523941202.

It is an arithmetic number, because the mean of its divisors is an integer number (3891332849976).

Almost surely, 2^{121121212101222} is an apocalyptic number.

121121212101222 is an abundant number, since it is smaller than the sum of its proper divisors (127924090297242).

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

121121212101222 is a wasteful number, since it uses less digits than its factorization.

121121212101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86493.

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

Adding to 121121212101222 its reverse (222101212121121), we get a palindrome (343222424222343).

The spelling of 121121212101222 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twelve million, one hundred one thousand, two hundred twenty-two".