1022211210221 has 4 divisors (see below), whose sum is σ = 1022230729344. Its totient is φ = 1022191691100.

The previous prime is 1022211210211. The next prime is 1022211210233. The reversal of 1022211210221 is 1220121122201.

1022211210221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1022211210221 - 2¹⁰ = 1022211209197 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 1022211210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022211210211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9680795 + ... + 9785816.

It is an arithmetic number, because the mean of its divisors is an integer number (255557682336).

Almost surely, 2^{1022211210221} is an apocalyptic number.

It is an amenable number.

1022211210221 is a deficient number, since it is larger than the sum of its proper divisors (19519123).

1022211210221 is an equidigital number, since it uses as much as digits as its factorization.

1022211210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19519122.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1022211210221 its reverse (1220121122201), we get a palindrome (2242332332422).

The spelling of 1022211210221 in words is "one trillion, twenty-two billion, two hundred eleven million, two hundred ten thousand, two hundred twenty-one".