2331220100 has 72 divisors (see below), whose sum is σ = 5709009600. Its totient is φ = 818473600.

The previous prime is 2331220061. The next prime is 2331220121. The reversal of 2331220100 is 10221332.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4640 + ... + 68439.

It is an arithmetic number, because the mean of its divisors is an integer number (79291800).

Almost surely, 2^2331220100 is an apocalyptic number.

2331220100 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 2331220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2854504800).

2331220100 is an abundant number, since it is smaller than the sum of its proper divisors (3377789500).

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

2331220100 is a wasteful number, since it uses less digits than its factorization.

2331220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73133 (or 73126 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2331220100 is about 48282.7101559140. The cubic root of 2331220100 is about 1325.9518685319.

Adding to 2331220100 its reverse (10221332), we get a palindrome (2341441432).

The spelling of 2331220100 in words is "two billion, three hundred thirty-one million, two hundred twenty thousand, one hundred".