23111021213333 has 4 divisors (see below), whose sum is σ = 23907952979340. Its totient is φ = 22314089447328.

The previous prime is 23111021213321. The next prime is 23111021213351. The reversal of 23111021213333 is 33331212011132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9977050870609 + 13133970342724 = 3158647^2 + 3624082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23111021213333 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 (23111021213303) 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, 398465882960 + ... + 398465883017.

It is an arithmetic number, because the mean of its divisors is an integer number (5976988244835).

Almost surely, 2^{23111021213333} is an apocalyptic number.

It is an amenable number.

23111021213333 is a deficient number, since it is larger than the sum of its proper divisors (796931766007).

23111021213333 is an equidigital number, since it uses as much as digits as its factorization.

23111021213333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796931766006.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 23111021213333 its reverse (33331212011132), we get a palindrome (56442233224465).

The spelling of 23111021213333 in words is "twenty-three trillion, one hundred eleven billion, twenty-one million, two hundred thirteen thousand, three hundred thirty-three".