11220123211002 has 160 divisors (see below), whose sum is σ = 27632384271360. Its totient is φ = 3388664056320.

The previous prime is 11220123210949. The next prime is 11220123211081. The reversal of 11220123211002 is 20011232102211.

11220123211002 is a `hidden beast` number, since 11 + 220 + 12 + 321 + 100 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 79 ways as a sum of consecutive naturals, for example, 7185199 + ... + 8606237.

It is an arithmetic number, because the mean of its divisors is an integer number (172702401696).

Almost surely, 2^{11220123211002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11220123211002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13816192135680).

11220123211002 is an abundant number, since it is smaller than the sum of its proper divisors (16412261060358).

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

11220123211002 is a wasteful number, since it uses less digits than its factorization.

11220123211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421178 (or 1421169 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11220123211002 its reverse (20011232102211), we get a palindrome (31231355313213).

The spelling of 11220123211002 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-three million, two hundred eleven thousand, two".