121111111121233 has 16 divisors (see below), whose sum is σ = 126636338465280. Its totient is φ = 115676908494336.

The previous prime is 121111111121219. The next prime is 121111111121237. The reversal of 121111111121233 is 332121111111121.

It is a cyclic number.

It is not a de Polignac number, because 121111111121233 - 2¹⁷ = 121111110990161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111111121237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3545691 + ... + 15962272.

It is an arithmetic number, because the mean of its divisors is an integer number (7914771154080).

Almost surely, 2^{121111111121233} is an apocalyptic number.

It is an amenable number.

121111111121233 is a deficient number, since it is larger than the sum of its proper divisors (5525227344047).

121111111121233 is a wasteful number, since it uses less digits than its factorization.

121111111121233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19510296.

The product of its digits is 72, while the sum is 22.

Adding to 121111111121233 its reverse (332121111111121), we get a palindrome (453232222232354).

The spelling of 121111111121233 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty-one thousand, two hundred thirty-three".