1220221102202 has 4 divisors (see below), whose sum is σ = 1830331653306. Its totient is φ = 610110551100.

The previous prime is 1220221102201. The next prime is 1220221102319. The reversal of 1220221102202 is 2022011220221.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 957225467641 + 262995634561 = 978379^2 + 512831^2 .

It is a super-3 number, since 3×1220221102202³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220221102201) by changing a digit.

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 as a sum of consecutive naturals, namely, 305055275549 + ... + 305055275552.

Almost surely, 2^{1220221102202} is an apocalyptic number.

1220221102202 is a deficient number, since it is larger than the sum of its proper divisors (610110551104).

1220221102202 is an equidigital number, since it uses as much as digits as its factorization.

1220221102202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610110551103.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1220221102202 its reverse (2022011220221), we get a palindrome (3242232322423).

The spelling of 1220221102202 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred two thousand, two hundred two".