2221002012221 has 8 divisors (see below), whose sum is σ = 2245989096000. Its totient is φ = 2196015639840.

The previous prime is 2221002012211. The next prime is 2221002012253. The reversal of 2221002012221 is 1222102001222.

It is a happy number.

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 2221002012221 - 2¹⁰ = 2221002011197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221002012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221002012211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8432006 + ... + 8691416.

It is an arithmetic number, because the mean of its divisors is an integer number (280748637000).

Almost surely, 2^{2221002012221} is an apocalyptic number.

It is an amenable number.

2221002012221 is a deficient number, since it is larger than the sum of its proper divisors (24987083779).

2221002012221 is an equidigital number, since it uses as much as digits as its factorization.

2221002012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355699.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2221002012221 its reverse (1222102001222), we get a palindrome (3443104013443).

The spelling of 2221002012221 in words is "two trillion, two hundred twenty-one billion, two million, twelve thousand, two hundred twenty-one".