21213420030111 has 8 divisors (see below), whose sum is σ = 28295302382640. Its totient is φ = 14136908848832.

The previous prime is 21213420030097. The next prime is 21213420030133. The reversal of 21213420030111 is 11103002431212.

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 21213420030111 - 2²⁹ = 21212883159199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213422030111) 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, 1342783596 + ... + 1342799393.

It is an arithmetic number, because the mean of its divisors is an integer number (3536912797830).

Almost surely, 2^{21213420030111} is an apocalyptic number.

21213420030111 is a deficient number, since it is larger than the sum of its proper divisors (7081882352529).

21213420030111 is a wasteful number, since it uses less digits than its factorization.

21213420030111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685585625.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21213420030111 its reverse (11103002431212), we get a palindrome (32316422461323).

The spelling of 21213420030111 in words is "twenty-one trillion, two hundred thirteen billion, four hundred twenty million, thirty thousand, one hundred eleven".