11121101000 has 64 divisors (see below), whose sum is σ = 26040858480. Its totient is φ = 4445452800.

The previous prime is 11121100997. The next prime is 11121101009. The reversal of 11121101000 is 10112111.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 40170244 + 11080930756 = 6338^2 + 105266^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11121101009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2050292 + ... + 2055708.

Almost surely, 2^11121101000 is an apocalyptic number.

11121101000 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 11121101000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13020429240).

11121101000 is an abundant number, since it is smaller than the sum of its proper divisors (14919757480).

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

11121101000 is a wasteful number, since it uses less digits than its factorization.

11121101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7491 (or 7477 counting only the distinct ones).

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

Adding to 11121101000 its reverse (10112111), we get a palindrome (11131213111).

The spelling of 11121101000 in words is "eleven billion, one hundred twenty-one million, one hundred one thousand".