1111221221002 has 8 divisors (see below), whose sum is σ = 1724308791300. Its totient is φ = 536451623904.

The previous prime is 1111221220987. The next prime is 1111221221017. The reversal of 1111221221002 is 2001221221111.

It is an interprime number because it is at equal distance from previous prime (1111221220987) and next prime (1111221221017).

It can be written as a sum of positive squares in 2 ways, for example, as 1109548329201 + 1672891801 = 1053351^2 + 40901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 9579493227 + ... + 9579493342.

Almost surely, 2^{1111221221002} is an apocalyptic number.

1111221221002 is a deficient number, since it is larger than the sum of its proper divisors (613087570298).

1111221221002 is a wasteful number, since it uses less digits than its factorization.

1111221221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19158986600.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1111221221002 its reverse (2001221221111), we get a palindrome (3112442442113).

The spelling of 1111221221002 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, two".