11221221111002 has 16 divisors (see below), whose sum is σ = 19434692235840. Its totient is φ = 4759516464768.

The previous prime is 11221221110987. The next prime is 11221221111047. The reversal of 11221221111002 is 20011112212211.

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 in 7 ways as a sum of consecutive naturals, for example, 4131523352 + ... + 4131526067.

It is an arithmetic number, because the mean of its divisors is an integer number (1214668264740).

Almost surely, 2^{11221221111002} is an apocalyptic number.

11221221111002 is a deficient number, since it is larger than the sum of its proper divisors (8213471124838).

11221221111002 is an equidigital number, since it uses as much as digits as its factorization.

11221221111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8263049525.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221221111002 its reverse (20011112212211), we get a palindrome (31232333323213).

The spelling of 11221221111002 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred eleven thousand, two".