21213200111130 has 256 divisors, whose sum is σ = 59217914004480. Its totient is φ = 5393527603200.

The previous prime is 21213200111119. The next prime is 21213200111137. The reversal of 21213200111130 is 3111100231212.

21213200111130 is a `hidden beast` number, since 212 + 1 + 320 + 0 + 1 + 1 + 1 + 130 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21213200111137) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2599334250 + ... + 2599342410.

It is an arithmetic number, because the mean of its divisors is an integer number (231319976580).

Almost surely, 2^{21213200111130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21213200111130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29608957002240).

21213200111130 is an abundant number, since it is smaller than the sum of its proper divisors (38004713893350).

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

21213200111130 is a wasteful number, since it uses less digits than its factorization.

21213200111130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9494 (or 9488 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21213200111130 its reverse (3111100231212), we get a palindrome (24324300342342).

The spelling of 21213200111130 in words is "twenty-one trillion, two hundred thirteen billion, two hundred million, one hundred eleven thousand, one hundred thirty".