1001222220202 has 4 divisors (see below), whose sum is σ = 1501833330306. Its totient is φ = 500611110100.

The previous prime is 1001222220161. The next prime is 1001222220241. The reversal of 1001222220202 is 2020222221001.

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., 746874479961 + 254347740241 = 864219^2 + 504329^2 .

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, 250305555049 + ... + 250305555052.

Almost surely, 2^{1001222220202} is an apocalyptic number.

1001222220202 is a deficient number, since it is larger than the sum of its proper divisors (500611110104).

1001222220202 is an equidigital number, since it uses as much as digits as its factorization.

1001222220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500611110103.

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

Adding to 1001222220202 its reverse (2020222221001), we get a palindrome (3021444441203).

The spelling of 1001222220202 in words is "one trillion, one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred two".