121112210111 has 8 divisors (see below), whose sum is σ = 121646232000. Its totient is φ = 120578416000.

The previous prime is 121112210071. The next prime is 121112210123. The reversal of 121112210111 is 111012211121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121112210111 - 2⁶ = 121112210047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112210711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056611 + ... + 1165611.

It is an arithmetic number, because the mean of its divisors is an integer number (15205779000).

Almost surely, 2^121112210111 is an apocalyptic number.

121112210111 is a deficient number, since it is larger than the sum of its proper divisors (534021889).

121112210111 is a wasteful number, since it uses less digits than its factorization.

121112210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113889.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121112210111 its reverse (111012211121), we get a palindrome (232124421232).

It can be divided in two parts, 12111 and 2210111, that added together give a palindrome (2222222).

The spelling of 121112210111 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred ten thousand, one hundred eleven".