11101221021200 has 120 divisors (see below), whose sum is σ = 27381345178176. Its totient is φ = 4323447232000.

The previous prime is 11101221021197. The next prime is 11101221021203. The reversal of 11101221021200 is 212012210111.

It is an interprime number because it is at equal distance from previous prime (11101221021197) and next prime (11101221021203).

It is not an unprimeable number, because it can be changed into a prime (11101221021203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 778565 + ... + 4775835.

Almost surely, 2^{11101221021200} is an apocalyptic number.

11101221021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11101221021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13690672589088).

11101221021200 is an abundant number, since it is smaller than the sum of its proper divisors (16280124156976).

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

11101221021200 is a wasteful number, since it uses less digits than its factorization.

11101221021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997473 (or 3997462 counting only the distinct ones).

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

Adding to 11101221021200 its reverse (212012210111), we get a palindrome (11313233231311).

The spelling of 11101221021200 in words is "eleven trillion, one hundred one billion, two hundred twenty-one million, twenty-one thousand, two hundred".