21222020316105 has 48 divisors (see below), whose sum is σ = 42752350892160. Its totient is φ = 9537062874624.

The previous prime is 21222020316083. The next prime is 21222020316181. The reversal of 21222020316105 is 50161302022212.

21222020316105 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 20 + 20 + 3 + 1 + 610 + 5 = 666.

It is not a de Polignac number, because 21222020316105 - 2⁸ = 21222020315849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 570926272 + ... + 570963441.

It is an arithmetic number, because the mean of its divisors is an integer number (890673976920).

Almost surely, 2^{21222020316105} is an apocalyptic number.

It is an amenable number.

21222020316105 is an abundant number, since it is smaller than the sum of its proper divisors (21530330576055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21222020316105 is a wasteful number, since it uses less digits than its factorization.

21222020316105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141889790 (or 1141889787 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 21222020316105 its reverse (50161302022212), we get a palindrome (71383322338317).

The spelling of 21222020316105 in words is "twenty-one trillion, two hundred twenty-two billion, twenty million, three hundred sixteen thousand, one hundred five".