1001221000202 has 4 divisors (see below), whose sum is σ = 1501831500306. Its totient is φ = 500610500100.

The previous prime is 1001221000183. The next prime is 1001221000217. The reversal of 1001221000202 is 2020001221001.

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., 926616086881 + 74604913321 = 962609^2 + 273139^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 250305250049 + ... + 250305250052.

Almost surely, 2^{1001221000202} is an apocalyptic number.

1001221000202 is a deficient number, since it is larger than the sum of its proper divisors (500610500104).

1001221000202 is an equidigital number, since it uses as much as digits as its factorization.

1001221000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500610500103.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1001221000202 its reverse (2020001221001), we get a palindrome (3021222221203).

The spelling of 1001221000202 in words is "one trillion, one billion, two hundred twenty-one million, two hundred two", and thus it is an aban number.