1022202203321 has 4 divisors (see below), whose sum is σ = 1100833142052. Its totient is φ = 943571264592.

The previous prime is 1022202203317. The next prime is 1022202203327. The reversal of 1022202203321 is 1233022022201.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 645353548921 + 376848654400 = 803339^2 + 613880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022202203321 - 2² = 1022202203317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1022202203293 and 1022202203302.

It is not an unprimeable number, because it can be changed into a prime (1022202203327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39315469346 + ... + 39315469371.

It is an arithmetic number, because the mean of its divisors is an integer number (275208285513).

Almost surely, 2^{1022202203321} is an apocalyptic number.

It is an amenable number.

1022202203321 is a deficient number, since it is larger than the sum of its proper divisors (78630938731).

1022202203321 is an equidigital number, since it uses as much as digits as its factorization.

1022202203321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78630938730.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1022202203321 its reverse (1233022022201), we get a palindrome (2255224225522).

The spelling of 1022202203321 in words is "one trillion, twenty-two billion, two hundred two million, two hundred three thousand, three hundred twenty-one".