11012120000 has 280 divisors, whose sum is σ = 31727144064. Its totient is φ = 3712896000.

The previous prime is 11012119967. The next prime is 11012120023. The reversal of 11012120000 is 2121011.

It is a tau number, because it is divible by the number of its divisors (280).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 11012120000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18759707 + ... + 18760293.

Almost surely, 2^11012120000 is an apocalyptic number.

11012120000 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 11012120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15863572032).

11012120000 is an abundant number, since it is smaller than the sum of its proper divisors (20715024064).

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

11012120000 is an frugal number, since it uses more digits than its factorization.

11012120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11012120000 its reverse (2121011), we get a palindrome (11014241011).

The spelling of 11012120000 in words is "eleven billion, twelve million, one hundred twenty thousand".