2130021231100 has 144 divisors (see below), whose sum is σ = 5323159296000. Its totient is φ = 724682937600.

The previous prime is 2130021231071. The next prime is 2130021231109. The reversal of 2130021231100 is 11321200312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130021231109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59150901 + ... + 59186899.

It is an arithmetic number, because the mean of its divisors is an integer number (36966384000).

Almost surely, 2^{2130021231100} is an apocalyptic number.

2130021231100 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 2130021231100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2661579648000).

2130021231100 is an abundant number, since it is smaller than the sum of its proper divisors (3193138064900).

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

2130021231100 is a wasteful number, since it uses less digits than its factorization.

2130021231100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36668 (or 36661 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2130021231100 its reverse (11321200312), we get a palindrome (2141342431412).

The spelling of 2130021231100 in words is "two trillion, one hundred thirty billion, twenty-one million, two hundred thirty-one thousand, one hundred".