121212022110211 has 16 divisors (see below), whose sum is σ = 123846574864320. Its totient is φ = 118605928826880.

The previous prime is 121212022110199. The next prime is 121212022110233. The reversal of 121212022110211 is 112011220212121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121212022110211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121212022210211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120334546 + ... + 121337656.

It is an arithmetic number, because the mean of its divisors is an integer number (7740410929020).

Almost surely, 2^{121212022110211} is an apocalyptic number.

121212022110211 is a deficient number, since it is larger than the sum of its proper divisors (2634552754109).

121212022110211 is a wasteful number, since it uses less digits than its factorization.

121212022110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017294.

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

Adding to 121212022110211 its reverse (112011220212121), we get a palindrome (233223242322332).

The spelling of 121212022110211 in words is "one hundred twenty-one trillion, two hundred twelve billion, twenty-two million, one hundred ten thousand, two hundred eleven".