21222020316103 has 16 divisors (see below), whose sum is σ = 21772214311680. Its totient is φ = 20679390547200.

The previous prime is 21222020316083. The next prime is 21222020316181. The reversal of 21222020316103 is 30161302022212.

It is a cyclic number.

It is not a de Polignac number, because 21222020316103 - 2⁵ = 21222020316071 is a prime.

It is a super-2 number, since 2×21222020316103² (a number of 27 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 (21222020316193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3004608 + ... + 7174378.

It is an arithmetic number, because the mean of its divisors is an integer number (1360763394480).

Almost surely, 2^{21222020316103} is an apocalyptic number.

21222020316103 is a deficient number, since it is larger than the sum of its proper divisors (550193995577).

21222020316103 is an equidigital number, since it uses as much as digits as its factorization.

21222020316103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170678.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21222020316103 its reverse (30161302022212), we get a palindrome (51383322338315).

The spelling of 21222020316103 in words is "twenty-one trillion, two hundred twenty-two billion, twenty million, three hundred sixteen thousand, one hundred three".