11110121000 has 192 divisors, whose sum is σ = 29333378880. Its totient is φ = 3906000000.

The previous prime is 11110120999. The next prime is 11110121021. The reversal of 11110121000 is 12101111.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10570475 + ... + 10571525.

It is an arithmetic number, because the mean of its divisors is an integer number (152778015).

Almost surely, 2^11110121000 is an apocalyptic number.

11110121000 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 11110121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14666689440).

11110121000 is an abundant number, since it is smaller than the sum of its proper divisors (18223257880).

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

11110121000 is a wasteful number, since it uses less digits than its factorization.

11110121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11110121000 its reverse (12101111), we get a palindrome (11122222111).

It can be divided in two parts, 11 and 110121000, that added together give a palindrome (110121011).

The spelling of 11110121000 in words is "eleven billion, one hundred ten million, one hundred twenty-one thousand".