21212201212313 has 8 divisors (see below), whose sum is σ = 21576750488160. Its totient is φ = 20847819284640.

The previous prime is 21212201212297. The next prime is 21212201212333. The reversal of 21212201212313 is 31321210221212.

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 21212201212313 - 2⁴ = 21212201212297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21212201212333) 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, 41581343 + ... + 42088388.

It is an arithmetic number, because the mean of its divisors is an integer number (2697093811020).

Almost surely, 2^{21212201212313} is an apocalyptic number.

It is an amenable number.

21212201212313 is a deficient number, since it is larger than the sum of its proper divisors (364549275847).

21212201212313 is an equidigital number, since it uses as much as digits as its factorization.

21212201212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83674087.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21212201212313 its reverse (31321210221212), we get a palindrome (52533411433525).

The spelling of 21212201212313 in words is "twenty-one trillion, two hundred twelve billion, two hundred one million, two hundred twelve thousand, three hundred thirteen".