21222004050355 has 16 divisors (see below), whose sum is σ = 25619241090240. Its totient is φ = 16875715142272.

The previous prime is 21222004050341. The next prime is 21222004050409. The reversal of 21222004050355 is 55305040022212.

It is a cyclic number.

It is not a de Polignac number, because 21222004050355 - 2¹¹ = 21222004048307 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92494437 + ... + 92723593.

It is an arithmetic number, because the mean of its divisors is an integer number (1601202568140).

Almost surely, 2^{21222004050355} is an apocalyptic number.

21222004050355 is a deficient number, since it is larger than the sum of its proper divisors (4397237039885).

21222004050355 is a wasteful number, since it uses less digits than its factorization.

21222004050355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340238.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 21222004050355 its reverse (55305040022212), we get a palindrome (76527044072567).

The spelling of 21222004050355 in words is "twenty-one trillion, two hundred twenty-two billion, four million, fifty thousand, three hundred fifty-five".