1213021120222 has 4 divisors (see below), whose sum is σ = 1819531680336. Its totient is φ = 606510560110.

The previous prime is 1213021120219. The next prime is 1213021120243. The reversal of 1213021120222 is 2220211203121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1213021120222.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 303255280054 + ... + 303255280057.

It is an arithmetic number, because the mean of its divisors is an integer number (454882920084).

Almost surely, 2^{1213021120222} is an apocalyptic number.

1213021120222 is a deficient number, since it is larger than the sum of its proper divisors (606510560114).

1213021120222 is an equidigital number, since it uses as much as digits as its factorization.

1213021120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606510560113.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1213021120222 its reverse (2220211203121), we get a palindrome (3433232323343).

The spelling of 1213021120222 in words is "one trillion, two hundred thirteen billion, twenty-one million, one hundred twenty thousand, two hundred twenty-two".