121122110211 has 4 divisors (see below), whose sum is σ = 161496146952. Its totient is φ = 80748073472.

The previous prime is 121122110203. The next prime is 121122110237. The reversal of 121122110211 is 112011221121.

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 121122110211 - 2³ = 121122110203 is a prime.

It is a super-3 number, since 3×121122110211³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121122110201) 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, 20187018366 + ... + 20187018371.

It is an arithmetic number, because the mean of its divisors is an integer number (40374036738).

Almost surely, 2^121122110211 is an apocalyptic number.

121122110211 is a deficient number, since it is larger than the sum of its proper divisors (40374036741).

121122110211 is an equidigital number, since it uses as much as digits as its factorization.

121122110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40374036740.

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

Adding to 121122110211 its reverse (112011221121), we get a palindrome (233133331332).

The spelling of 121122110211 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred ten thousand, two hundred eleven".