23111221212243 has 16 divisors (see below), whose sum is σ = 34239027300000. Its totient is φ = 15407399331360.

The previous prime is 23111221212221. The next prime is 23111221212269. The reversal of 23111221212243 is 34221212211132.

23111221212243 is a `hidden beast` number, since 2 + 311 + 1 + 2 + 2 + 121 + 224 + 3 = 666.

It is not a de Polignac number, because 23111221212243 - 2¹³ = 23111221204051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23111221212043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3174633 + ... + 7503381.

It is an arithmetic number, because the mean of its divisors is an integer number (2139939206250).

Almost surely, 2^{23111221212243} is an apocalyptic number.

23111221212243 is a deficient number, since it is larger than the sum of its proper divisors (11127806087757).

23111221212243 is a wasteful number, since it uses less digits than its factorization.

23111221212243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526499 (or 4526493 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 23111221212243 its reverse (34221212211132), we get a palindrome (57332433423375).

The spelling of 23111221212243 in words is "twenty-three trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twelve thousand, two hundred forty-three".