11100121021200 has 60 divisors (see below), whose sum is σ = 35557387675088. Its totient is φ = 2960032272000.

The previous prime is 11100121021183. The next prime is 11100121021201. The reversal of 11100121021200 is 212012100111.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×11100121021200² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (11100121021201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4625049226 + ... + 4625051625.

Almost surely, 2^{11100121021200} is an apocalyptic number.

11100121021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100121021200 is an abundant number, since it is smaller than the sum of its proper divisors (24457266653888).

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

11100121021200 is a wasteful number, since it uses less digits than its factorization.

11100121021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9250100872 (or 9250100861 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11100121021200 its reverse (212012100111), we get a palindrome (11312133121311).

The spelling of 11100121021200 in words is "eleven trillion, one hundred billion, one hundred twenty-one million, twenty-one thousand, two hundred".