121200112221211 has 4 divisors (see below), whose sum is σ = 122154443813632. Its totient is φ = 120245780628792.

The previous prime is 121200112221163. The next prime is 121200112221229. The reversal of 121200112221211 is 112122211002121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121200112221211 - 2²¹ = 121200110124059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121200112221611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477165796020 + ... + 477165796273.

It is an arithmetic number, because the mean of its divisors is an integer number (30538610953408).

Almost surely, 2^{121200112221211} is an apocalyptic number.

121200112221211 is a deficient number, since it is larger than the sum of its proper divisors (954331592421).

121200112221211 is an equidigital number, since it uses as much as digits as its factorization.

121200112221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954331592420.

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

Adding to 121200112221211 its reverse (112122211002121), we get a palindrome (233322323223332).

The spelling of 121200112221211 in words is "one hundred twenty-one trillion, two hundred billion, one hundred twelve million, two hundred twenty-one thousand, two hundred eleven".