121333411111 has 4 divisors (see below), whose sum is σ = 132363721224. Its totient is φ = 110303101000.

The previous prime is 121333411103. The next prime is 121333411117. The reversal of 121333411111 is 111114333121.

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 121333411111 - 2³ = 121333411103 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 (121333411117) 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, 5515155040 + ... + 5515155061.

It is an arithmetic number, because the mean of its divisors is an integer number (33090930306).

Almost surely, 2^121333411111 is an apocalyptic number.

121333411111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121333411111 is a deficient number, since it is larger than the sum of its proper divisors (11030310113).

121333411111 is a wasteful number, since it uses less digits than its factorization.

121333411111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11030310112.

The product of its digits is 216, while the sum is 22.

Adding to 121333411111 its reverse (111114333121), we get a palindrome (232447744232).

The spelling of 121333411111 in words is "one hundred twenty-one billion, three hundred thirty-three million, four hundred eleven thousand, one hundred eleven".