1222113201220 has 12 divisors (see below), whose sum is σ = 2566437722604. Its totient is φ = 488845280480.

The previous prime is 1222113201181. The next prime is 1222113201251. The reversal of 1222113201220 is 221023112221.

It can be written as a sum of positive squares in 2 ways, for example, as 209405081664 + 1012708119556 = 457608^2 + 1006334^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30552830011 + ... + 30552830050.

It is an arithmetic number, because the mean of its divisors is an integer number (213869810217).

Almost surely, 2^{1222113201220} is an apocalyptic number.

1222113201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222113201220 is an abundant number, since it is smaller than the sum of its proper divisors (1344324521384).

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

1222113201220 is a wasteful number, since it uses less digits than its factorization.

1222113201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61105660070 (or 61105660068 counting only the distinct ones).

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

Adding to 1222113201220 its reverse (221023112221), we get a palindrome (1443136313441).

The spelling of 1222113201220 in words is "one trillion, two hundred twenty-two billion, one hundred thirteen million, two hundred one thousand, two hundred twenty".