1212203321022 has 64 divisors (see below), whose sum is σ = 2557215593280. Its totient is φ = 382490594304.

The previous prime is 1212203320931. The next prime is 1212203321023. The reversal of 1212203321022 is 2201233022121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212203321022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212203321023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12613938 + ... + 12709674.

It is an arithmetic number, because the mean of its divisors is an integer number (39956493645).

Almost surely, 2^{1212203321022} is an apocalyptic number.

1212203321022 is an abundant number, since it is smaller than the sum of its proper divisors (1345012272258).

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

1212203321022 is a wasteful number, since it uses less digits than its factorization.

1212203321022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97197.

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

Adding to 1212203321022 its reverse (2201233022121), we get a palindrome (3413436343143).

The spelling of 1212203321022 in words is "one trillion, two hundred twelve billion, two hundred three million, three hundred twenty-one thousand, twenty-two".