11211111020000 has 120 divisors (see below), whose sum is σ = 27637212129912. Its totient is φ = 4475307200000.

The previous prime is 11211111019993. The next prime is 11211111020029. The reversal of 11211111020000 is 2011111211.

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, 9249170 + ... + 10390830.

Almost surely, 2^{11211111020000} is an apocalyptic number.

11211111020000 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 11211111020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13818606064956).

11211111020000 is an abundant number, since it is smaller than the sum of its proper divisors (16426101109912).

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

11211111020000 is an equidigital number, since it uses as much as digits as its factorization.

11211111020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142182 (or 1142159 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11211111020000 its reverse (2011111211), we get a palindrome (11213122131211).

The spelling of 11211111020000 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, twenty thousand".