121133221111 has 8 divisors (see below), whose sum is σ = 138577670144. Its totient is φ = 103723697880.

The previous prime is 121133221109. The next prime is 121133221141. The reversal of 121133221111 is 111122331121.

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 121133221111 - 2¹ = 121133221109 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 (121133221141) 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, 8724015 + ... + 8737888.

It is an arithmetic number, because the mean of its divisors is an integer number (17322208768).

Almost surely, 2^121133221111 is an apocalyptic number.

121133221111 is a deficient number, since it is larger than the sum of its proper divisors (17444449033).

121133221111 is an equidigital number, since it uses as much as digits as its factorization.

121133221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17462901.

The product of its digits is 72, while the sum is 19.

Adding to 121133221111 its reverse (111122331121), we get a palindrome (232255552232).

The spelling of 121133221111 in words is "one hundred twenty-one billion, one hundred thirty-three million, two hundred twenty-one thousand, one hundred eleven".