10221220201219 has 4 divisors (see below), whose sum is σ = 10221237772720. Its totient is φ = 10221202629720.

The previous prime is 10221220201207. The next prime is 10221220201223. The reversal of 10221220201219 is 91210202212201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10221220201219 - 2¹¹ = 10221220199171 is a prime.

It is a super-2 number, since 2×10221220201219² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221220201193 and 10221220201202.

It is not an unprimeable number, because it can be changed into a prime (10221220201019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7882239 + ... + 9086920.

It is an arithmetic number, because the mean of its divisors is an integer number (2555309443180).

Almost surely, 2^{10221220201219} is an apocalyptic number.

10221220201219 is a deficient number, since it is larger than the sum of its proper divisors (17571501).

10221220201219 is an equidigital number, since it uses as much as digits as its factorization.

10221220201219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17571500.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 10221220201219 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty million, two hundred one thousand, two hundred nineteen".