121111010233 has 4 divisors (see below), whose sum is σ = 123163739280. Its totient is φ = 119058281188.

The previous prime is 121111010197. The next prime is 121111010261. The reversal of 121111010233 is 332010111121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121111010233 - 2²⁵ = 121077455801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111010533) 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, 1026364435 + ... + 1026364552.

It is an arithmetic number, because the mean of its divisors is an integer number (30790934820).

Almost surely, 2^121111010233 is an apocalyptic number.

It is an amenable number.

121111010233 is a deficient number, since it is larger than the sum of its proper divisors (2052729047).

121111010233 is an equidigital number, since it uses as much as digits as its factorization.

121111010233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052729046.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121111010233 its reverse (332010111121), we get a palindrome (453121121354).

The spelling of 121111010233 in words is "one hundred twenty-one billion, one hundred eleven million, ten thousand, two hundred thirty-three".