21214204242104 has 32 divisors (see below), whose sum is σ = 40531980154320. Its totient is φ = 10405724050176.

The previous prime is 21214204242097. The next prime is 21214204242173. The reversal of 21214204242104 is 40124240241212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565487 + ... + 6538209.

Almost surely, 2^{21214204242104} is an apocalyptic number.

It is an amenable number.

21214204242104 is a deficient number, since it is larger than the sum of its proper divisors (19317775912216).

21214204242104 is a wasteful number, since it uses less digits than its factorization.

21214204242104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981159 (or 5981155 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 21214204242104 its reverse (40124240241212), we get a palindrome (61338444483316).

The spelling of 21214204242104 in words is "twenty-one trillion, two hundred fourteen billion, two hundred four million, two hundred forty-two thousand, one hundred four".