121101212211 has 16 divisors (see below), whose sum is σ = 185601863424. Its totient is φ = 68800686624.

The previous prime is 121101212179. The next prime is 121101212237. The reversal of 121101212211 is 112212101121.

It is a happy number.

It is not a de Polignac number, because 121101212211 - 2⁵ = 121101212179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121101212711) 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, 16663201 + ... + 16670466.

It is an arithmetic number, because the mean of its divisors is an integer number (11600116464).

Almost surely, 2^121101212211 is an apocalyptic number.

121101212211 is a deficient number, since it is larger than the sum of its proper divisors (64500651213).

121101212211 is a wasteful number, since it uses less digits than its factorization.

121101212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33333850.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121101212211 its reverse (112212101121), we get a palindrome (233313313332).

The spelling of 121101212211 in words is "one hundred twenty-one billion, one hundred one million, two hundred twelve thousand, two hundred eleven".