121212220212211 has 8 divisors (see below), whose sum is σ = 122707433034000. Its totient is φ = 119726096830560.

The previous prime is 121212220212151. The next prime is 121212220212229. The reversal of 121212220212211 is 112212022212121.

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

It is a cyclic number.

It is not a de Polignac number, because 121212220212211 - 2³⁹ = 120662464398323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131212220212211) 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, 2272333200 + ... + 2272386541.

It is an arithmetic number, because the mean of its divisors is an integer number (15338429129250).

Almost surely, 2^{121212220212211} is an apocalyptic number.

121212220212211 is a deficient number, since it is larger than the sum of its proper divisors (1495212821789).

121212220212211 is a wasteful number, since it uses less digits than its factorization.

121212220212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544720069.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 121212220212211 its reverse (112212022212121), we get a palindrome (233424242424332).

The spelling of 121212220212211 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred twenty million, two hundred twelve thousand, two hundred eleven".