21311003210213 has 8 divisors (see below), whose sum is σ = 21324775835520. Its totient is φ = 21297234726720.

The previous prime is 21311003210179. The next prime is 21311003210239. The reversal of 21311003210213 is 31201230011312.

It is a happy number.

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 21311003210213 - 2⁸ = 21311003209957 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 (21311003216213) 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, 9291773 + ... + 11356013.

It is an arithmetic number, because the mean of its divisors is an integer number (2665596979440).

Almost surely, 2^{21311003210213} is an apocalyptic number.

It is an amenable number.

21311003210213 is a deficient number, since it is larger than the sum of its proper divisors (13772625307).

21311003210213 is a wasteful number, since it uses less digits than its factorization.

21311003210213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070907.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21311003210213 its reverse (31201230011312), we get a palindrome (52512233221525).

The spelling of 21311003210213 in words is "twenty-one trillion, three hundred eleven billion, three million, two hundred ten thousand, two hundred thirteen".