11101221020000 has 120 divisors (see below), whose sum is σ = 27491541728112. Its totient is φ = 4411080000000.

The previous prime is 11101221019991. The next prime is 11101221020027. The reversal of 11101221020000 is 2012210111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1182050 + ... + 4857950.

Almost surely, 2^{11101221020000} is an apocalyptic number.

11101221020000 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 11101221020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13745770864056).

11101221020000 is an abundant number, since it is smaller than the sum of its proper divisors (16390320708112).

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

11101221020000 is an equidigital number, since it uses as much as digits as its factorization.

11101221020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676082 (or 3676059 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11101221020000 its reverse (2012210111), we get a palindrome (11103233230111).

The spelling of 11101221020000 in words is "eleven trillion, one hundred one billion, two hundred twenty-one million, twenty thousand".