2221210021201 has 8 divisors (see below), whose sum is σ = 2272294789160. Its totient is φ = 2170683556992.

The previous prime is 2221210021169. The next prime is 2221210021297. The reversal of 2221210021201 is 1021200121222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 93039640576 + 2128170380625 = 305024^2 + 1458825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2221210021201 - 2⁵ = 2221210021169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221210021601) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 139567890 + ... + 139583803.

It is an arithmetic number, because the mean of its divisors is an integer number (284036848645).

Almost surely, 2^{2221210021201} is an apocalyptic number.

It is an amenable number.

2221210021201 is a deficient number, since it is larger than the sum of its proper divisors (51084767959).

2221210021201 is a wasteful number, since it uses less digits than its factorization.

2221210021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279151875.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2221210021201 its reverse (1021200121222), we get a palindrome (3242410142423).

The spelling of 2221210021201 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, twenty-one thousand, two hundred one".