111212202023 has 12 divisors (see below), whose sum is σ = 120474470520. Its totient is φ = 102615286176.

The previous prime is 111212201983. The next prime is 111212202037. The reversal of 111212202023 is 320202212111.

It is a de Polignac number, because none of the positive numbers 2^k-111212202023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111212201992 and 111212202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212202823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281765 + ... + 549377.

It is an arithmetic number, because the mean of its divisors is an integer number (10039539210).

Almost surely, 2^111212202023 is an apocalyptic number.

111212202023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111212202023 is a deficient number, since it is larger than the sum of its proper divisors (9262268497).

111212202023 is a wasteful number, since it uses less digits than its factorization.

111212202023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270098 (or 270085 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 111212202023 its reverse (320202212111), we get a palindrome (431414414134).

The spelling of 111212202023 in words is "one hundred eleven billion, two hundred twelve million, two hundred two thousand, twenty-three".