1023123112111 has 8 divisors (see below), whose sum is σ = 1053949647824. Its totient is φ = 992463658560.

The previous prime is 1023123112097. The next prime is 1023123112117. The reversal of 1023123112111 is 1112113213201.

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 1023123112111 - 2²⁹ = 1022586241199 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 (1023123112117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41758110 + ... + 41782603.

It is an arithmetic number, because the mean of its divisors is an integer number (131743705978).

Almost surely, 2^{1023123112111} is an apocalyptic number.

1023123112111 is a deficient number, since it is larger than the sum of its proper divisors (30826535713).

1023123112111 is an equidigital number, since it uses as much as digits as its factorization.

1023123112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83541081.

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

Adding to 1023123112111 its reverse (1112113213201), we get a palindrome (2135236325312).

The spelling of 1023123112111 in words is "one trillion, twenty-three billion, one hundred twenty-three million, one hundred twelve thousand, one hundred eleven".