21214241213 has 8 divisors (see below), whose sum is σ = 23184364320. Its totient is φ = 19251044080.

The previous prime is 21214241203. The next prime is 21214241219. The reversal of 21214241213 is 31214241212.

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 21214241213 - 2¹⁶ = 21214175677 is a prime.

It is a super-2 number, since 2×21214241213² (a number of 21 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 (21214241219) 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, 1725083 + ... + 1737336.

It is an arithmetic number, because the mean of its divisors is an integer number (2898045540).

Almost surely, 2^21214241213 is an apocalyptic number.

It is an amenable number.

21214241213 is a deficient number, since it is larger than the sum of its proper divisors (1970123107).

21214241213 is a wasteful number, since it uses less digits than its factorization.

21214241213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462987.

The product of its digits is 768, while the sum is 23.

Adding to 21214241213 its reverse (31214241212), we get a palindrome (52428482425).

Subtracting 21214241213 from its reverse (31214241212), we obtain a palindrome (9999999999).

The spelling of 21214241213 in words is "twenty-one billion, two hundred fourteen million, two hundred forty-one thousand, two hundred thirteen".