11200121001000 has 768 divisors, whose sum is σ = 40881727598400. Its totient is φ = 2759629824000.

The previous prime is 11200121000993. The next prime is 11200121001031. The reversal of 11200121001000 is 10012100211.

It is a happy number.

It can be written as a sum of positive squares in 32 ways, for example, as 8479382915844 + 2720738085156 = 2911938^2 + 1649466^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 589067494 + ... + 589086506.

Almost surely, 2^{11200121001000} is an apocalyptic number.

11200121001000 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 11200121001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20440863799200).

11200121001000 is an abundant number, since it is smaller than the sum of its proper divisors (29681606597400).

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

11200121001000 is a wasteful number, since it uses less digits than its factorization.

11200121001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19167 (or 19150 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11200121001000 its reverse (10012100211), we get a palindrome (11210133101211).

The spelling of 11200121001000 in words is "eleven trillion, two hundred billion, one hundred twenty-one million, one thousand".