121211101112122 has 8 divisors (see below), whose sum is σ = 207790459049376. Its totient is φ = 51947614762332.

The previous prime is 121211101112077. The next prime is 121211101112141. The reversal of 121211101112122 is 221211101112121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121211101112122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4328967896848 + ... + 4328967896875.

It is an arithmetic number, because the mean of its divisors is an integer number (25973807381172).

Almost surely, 2^{121211101112122} is an apocalyptic number.

121211101112122 is a deficient number, since it is larger than the sum of its proper divisors (86579357937254).

121211101112122 is an equidigital number, since it uses as much as digits as its factorization.

121211101112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8657935793732.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121211101112122 its reverse (221211101112121), we get a palindrome (342422202224243).

Subtracting 121211101112122 from its reverse (221211101112121), we obtain a palindrome (99999999999999).

The spelling of 121211101112122 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred one million, one hundred twelve thousand, one hundred twenty-two".