2131224100 has 36 divisors (see below), whose sum is σ = 4700585428. Its totient is φ = 838512000.

The previous prime is 2131224097. The next prime is 2131224101. The reversal of 2131224100 is 14221312.

It can be written as a sum of positive squares in 6 ways, for example, as 9884736 + 2121339364 = 3144^2 + 46058^2 .

It is not an unprimeable number, because it can be changed into a prime (2131224101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168591 + ... + 180790.

Almost surely, 2^2131224100 is an apocalyptic number.

2131224100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131224100 is an abundant number, since it is smaller than the sum of its proper divisors (2569361328).

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

2131224100 is a wasteful number, since it uses less digits than its factorization.

2131224100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349456 (or 349449 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2131224100 is about 46165.1827679692. The cubic root of 2131224100 is about 1286.8947807434.

Adding to 2131224100 its reverse (14221312), we get a palindrome (2145445412).

The spelling of 2131224100 in words is "two billion, one hundred thirty-one million, two hundred twenty-four thousand, one hundred".