1321203221022 has 16 divisors (see below), whose sum is σ = 2644443779472. Its totient is φ = 440061517440.

The previous prime is 1321203221021. The next prime is 1321203221071. The reversal of 1321203221022 is 2201223021231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321203221022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321203221021) 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, 84880629 + ... + 84896192.

It is an arithmetic number, because the mean of its divisors is an integer number (165277736217).

Almost surely, 2^{1321203221022} is an apocalyptic number.

1321203221022 is an abundant number, since it is smaller than the sum of its proper divisors (1323240558450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321203221022 is a wasteful number, since it uses less digits than its factorization.

1321203221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169778123.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1321203221022 its reverse (2201223021231), we get a palindrome (3522426242253).

The spelling of 1321203221022 in words is "one trillion, three hundred twenty-one billion, two hundred three million, two hundred twenty-one thousand, twenty-two".