21232300013213 has 4 divisors (see below), whose sum is σ = 21232320117120. Its totient is φ = 21232279909308.

The previous prime is 21232300013207. The next prime is 21232300013227. The reversal of 21232300013213 is 31231000323212.

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.

It is a cyclic number.

It is not a de Polignac number, because 21232300013213 - 2⁶ = 21232300013149 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 (21232300013203) 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, 8374445 + ... + 10611122.

It is an arithmetic number, because the mean of its divisors is an integer number (5308080029280).

Almost surely, 2^{21232300013213} is an apocalyptic number.

It is an amenable number.

21232300013213 is a deficient number, since it is larger than the sum of its proper divisors (20103907).

21232300013213 is a wasteful number, since it uses less digits than its factorization.

21232300013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20103906.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21232300013213 its reverse (31231000323212), we get a palindrome (52463300336425).

The spelling of 21232300013213 in words is "twenty-one trillion, two hundred thirty-two billion, three hundred million, thirteen thousand, two hundred thirteen".