121113012211 has 4 divisors (see below), whose sum is σ = 121595534424. Its totient is φ = 120630490000.

The previous prime is 121113012173. The next prime is 121113012239. The reversal of 121113012211 is 112210311121.

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 121113012211 - 2⁹ = 121113011699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121113012271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241260730 + ... + 241261231.

It is an arithmetic number, because the mean of its divisors is an integer number (30398883606).

Almost surely, 2^121113012211 is an apocalyptic number.

121113012211 is a deficient number, since it is larger than the sum of its proper divisors (482522213).

121113012211 is an equidigital number, since it uses as much as digits as its factorization.

121113012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482522212.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121113012211 its reverse (112210311121), we get a palindrome (233323323332).

The spelling of 121113012211 in words is "one hundred twenty-one billion, one hundred thirteen million, twelve thousand, two hundred eleven".