21101201130 has 64 divisors (see below), whose sum is σ = 51878965248. Its totient is φ = 5491100160.

The previous prime is 21101201119. The next prime is 21101201131. The reversal of 21101201130 is 3110210112.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21101201131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187014 + ... + 277806.

It is an arithmetic number, because the mean of its divisors is an integer number (810608832).

Almost surely, 2^21101201130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21101201130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25939482624).

21101201130 is an abundant number, since it is smaller than the sum of its proper divisors (30777764118).

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

21101201130 is a wasteful number, since it uses less digits than its factorization.

21101201130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90991.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21101201130 its reverse (3110210112), we get a palindrome (24211411242).

The spelling of 21101201130 in words is "twenty-one billion, one hundred one million, two hundred one thousand, one hundred thirty".