123111020233 has 4 divisors (see below), whose sum is σ = 123116123520. Its totient is φ = 123105916948.

The previous prime is 123111020231. The next prime is 123111020273. The reversal of 123111020233 is 332020111321.

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 123111020233 - 2¹ = 123111020231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123111020233.

It is not an unprimeable number, because it can be changed into a prime (123111020231) 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, 2515285 + ... + 2563762.

It is an arithmetic number, because the mean of its divisors is an integer number (30779030880).

Almost surely, 2^123111020233 is an apocalyptic number.

It is an amenable number.

123111020233 is a deficient number, since it is larger than the sum of its proper divisors (5103287).

123111020233 is an equidigital number, since it uses as much as digits as its factorization.

123111020233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5103286.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123111020233 its reverse (332020111321), we get a palindrome (455131131554).

The spelling of 123111020233 in words is "one hundred twenty-three billion, one hundred eleven million, twenty thousand, two hundred thirty-three".