21331230113213 has 8 divisors (see below), whose sum is σ = 22381651009536. Its totient is φ = 20291057226000.

The previous prime is 21331230113209. The next prime is 21331230113227. The reversal of 21331230113213 is 31231103213312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21331230113213 - 2² = 21331230113209 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 (21331230113273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2561998013 + ... + 2562006338.

It is an arithmetic number, because the mean of its divisors is an integer number (2797706376192).

Almost surely, 2^{21331230113213} is an apocalyptic number.

21331230113213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21331230113213 is a deficient number, since it is larger than the sum of its proper divisors (1050420896323).

21331230113213 is a wasteful number, since it uses less digits than its factorization.

21331230113213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124004555.

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

Adding to 21331230113213 its reverse (31231103213312), we get a palindrome (52562333326525).

The spelling of 21331230113213 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred thirty million, one hundred thirteen thousand, two hundred thirteen".