121233312211 has 4 divisors (see below), whose sum is σ = 132254522424. Its totient is φ = 110212102000.

The previous prime is 121233312181. The next prime is 121233312223. The reversal of 121233312211 is 112213332121.

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

It is not a de Polignac number, because 121233312211 - 2²⁵ = 121199757779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121233312511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5510605090 + ... + 5510605111.

It is an arithmetic number, because the mean of its divisors is an integer number (33063630606).

Almost surely, 2^121233312211 is an apocalyptic number.

121233312211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121233312211 is a deficient number, since it is larger than the sum of its proper divisors (11021210213).

121233312211 is a wasteful number, since it uses less digits than its factorization.

121233312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021210212.

The product of its digits is 432, while the sum is 22.

Adding to 121233312211 its reverse (112213332121), we get a palindrome (233446644332).

The spelling of 121233312211 in words is "one hundred twenty-one billion, two hundred thirty-three million, three hundred twelve thousand, two hundred eleven".