23345451013021 has 4 divisors (see below), whose sum is σ = 23345461446912. Its totient is φ = 23345440579132.

The previous prime is 23345451013013. The next prime is 23345451013051. The reversal of 23345451013021 is 12031015454332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23345451013021 - 2³ = 23345451013013 is a prime.

It is a super-2 number, since 2×23345451013021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23345451013051) 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, 342781 + ... + 6841666.

It is an arithmetic number, because the mean of its divisors is an integer number (5836365361728).

Almost surely, 2^{23345451013021} is an apocalyptic number.

It is an amenable number.

23345451013021 is a deficient number, since it is larger than the sum of its proper divisors (10433891).

23345451013021 is an equidigital number, since it uses as much as digits as its factorization.

23345451013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10433890.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 23345451013021 its reverse (12031015454332), we get a palindrome (35376466467353).

The spelling of 23345451013021 in words is "twenty-three trillion, three hundred forty-five billion, four hundred fifty-one million, thirteen thousand, twenty-one".