1220222211202 has 16 divisors (see below), whose sum is σ = 1831503424824. Its totient is φ = 609721200000.

The previous prime is 1220222211199. The next prime is 1220222211209. The reversal of 1220222211202 is 2021122220221.

It can be written as a sum of positive squares in 4 ways, for example, as 754359994521 + 465862216681 = 868539^2 + 682541^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1220222211202.

It is not an unprimeable number, because it can be changed into a prime (1220222211209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20743552 + ... + 20802292.

Almost surely, 2^{1220222211202} is an apocalyptic number.

1220222211202 is a deficient number, since it is larger than the sum of its proper divisors (611281213622).

1220222211202 is a wasteful number, since it uses less digits than its factorization.

1220222211202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65205.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1220222211202 its reverse (2021122220221), we get a palindrome (3241344431423).

The spelling of 1220222211202 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred eleven thousand, two hundred two".