231121101200100 has 144 divisors (see below), whose sum is σ = 682961266848000. Its totient is φ = 60318936760320.

The previous prime is 231121101200083. The next prime is 231121101200183. The reversal of 231121101200100 is 1002101121132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 231121101200100.

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, 443734626 + ... + 444255174.

Almost surely, 2^{231121101200100} is an apocalyptic number.

231121101200100 is a gapful number since it is divisible by the number (20) 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 231121101200100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341480633424000).

231121101200100 is an abundant number, since it is smaller than the sum of its proper divisors (451840165647900).

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

231121101200100 is a wasteful number, since it uses less digits than its factorization.

231121101200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552102 (or 552095 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 231121101200100 its reverse (1002101121132), we get a palindrome (232123202321232).

The spelling of 231121101200100 in words is "two hundred thirty-one trillion, one hundred twenty-one billion, one hundred one million, two hundred thousand, one hundred".