1001111221202 has 4 divisors (see below), whose sum is σ = 1501666831806. Its totient is φ = 500555610600.

The previous prime is 1001111221193. The next prime is 1001111221207. The reversal of 1001111221202 is 2021221111001.

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., 1000558077841 + 553143361 = 1000279^2 + 23519^2 .

It is not an unprimeable number, because it can be changed into a prime (1001111221207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250277805299 + ... + 250277805302.

Almost surely, 2^{1001111221202} is an apocalyptic number.

1001111221202 is a deficient number, since it is larger than the sum of its proper divisors (500555610604).

1001111221202 is an equidigital number, since it uses as much as digits as its factorization.

1001111221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500555610603.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001111221202 its reverse (2021221111001), we get a palindrome (3022332332203).

The spelling of 1001111221202 in words is "one trillion, one billion, one hundred eleven million, two hundred twenty-one thousand, two hundred two".