11211321311100 has 108 divisors (see below), whose sum is σ = 35888950397664. Its totient is φ = 2926075338240.

The previous prime is 11211321311087. The next prime is 11211321311117. The reversal of 11211321311100 is 111312311211.

11211321311100 is a `hidden beast` number, since 1 + 1 + 21 + 1 + 321 + 311 + 10 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 132479229 + ... + 132563828.

Almost surely, 2^{11211321311100} is an apocalyptic number.

11211321311100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211321311100 is an abundant number, since it is smaller than the sum of its proper divisors (24677629086564).

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

11211321311100 is a wasteful number, since it uses less digits than its factorization.

11211321311100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265043124 (or 265043114 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 11211321311100 its reverse (111312311211), we get a palindrome (11322633622311).

The spelling of 11211321311100 in words is "eleven trillion, two hundred eleven billion, three hundred twenty-one million, three hundred eleven thousand, one hundred".