1220001202222 has 16 divisors (see below), whose sum is σ = 1997615733552. Its totient is φ = 554198742720.

The previous prime is 1220001202181. The next prime is 1220001202223. The reversal of 1220001202222 is 2222021000221.

It is a junction number, because it is equal to n+sod(n) for n = 1220001202196 and 1220001202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220001202223) 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, 17326983 + ... + 17397250.

It is an arithmetic number, because the mean of its divisors is an integer number (124850983347).

Almost surely, 2^{1220001202222} is an apocalyptic number.

1220001202222 is a deficient number, since it is larger than the sum of its proper divisors (777614531330).

1220001202222 is a wasteful number, since it uses less digits than its factorization.

1220001202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34725843.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1220001202222 its reverse (2222021000221), we get a palindrome (3442022202443).

The spelling of 1220001202222 in words is "one trillion, two hundred twenty billion, one million, two hundred two thousand, two hundred twenty-two".