11001221002002 has 128 divisors (see below), whose sum is σ = 27614288793600. Its totient is φ = 2838478325760.

The previous prime is 11001221001989. The next prime is 11001221002027. The reversal of 11001221002002 is 20020012210011.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56628778 + ... + 56822714.

It is an arithmetic number, because the mean of its divisors is an integer number (215736631200).

Almost surely, 2^{11001221002002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11001221002002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13807144396800).

11001221002002 is an abundant number, since it is smaller than the sum of its proper divisors (16613067791598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11001221002002 is a wasteful number, since it uses less digits than its factorization.

11001221002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194776.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11001221002002 its reverse (20020012210011), we get a palindrome (31021233212013).

The spelling of 11001221002002 in words is "eleven trillion, one billion, two hundred twenty-one million, two thousand, two".