1111121110023 has 4 divisors (see below), whose sum is σ = 1481494813368. Its totient is φ = 740747406680.

The previous prime is 1111121109883. The next prime is 1111121110061. The reversal of 1111121110023 is 3200111211111.

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 1111121110023 - 2²⁹ = 1110584239111 is a prime.

It is a super-2 number, since 2×1111121110023² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111121109984 and 1111121110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111121110093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185186851668 + ... + 185186851673.

It is an arithmetic number, because the mean of its divisors is an integer number (370373703342).

Almost surely, 2^{1111121110023} is an apocalyptic number.

1111121110023 is a deficient number, since it is larger than the sum of its proper divisors (370373703345).

1111121110023 is an equidigital number, since it uses as much as digits as its factorization.

1111121110023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370373703344.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 1111121110023 its reverse (3200111211111), we get a palindrome (4311232321134).

The spelling of 1111121110023 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, one hundred ten thousand, twenty-three".