21110020223130 has 24 divisors (see below), whose sum is σ = 54886052580372. Its totient is φ = 5629338726144.

The previous prime is 21110020223077. The next prime is 21110020223137. The reversal of 21110020223130 is 3132202001112.

21110020223130 is a `hidden beast` number, since 211 + 100 + 2 + 0 + 223 + 130 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16930665566721 + 4179354656409 = 4114689^2 + 2044347^2 .

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 (21110020223137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117277890039 + ... + 117277890218.

Almost surely, 2^{21110020223130} is an apocalyptic number.

21110020223130 is an abundant number, since it is smaller than the sum of its proper divisors (33776032357242).

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

21110020223130 is a wasteful number, since it uses less digits than its factorization.

21110020223130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234555780270 (or 234555780267 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21110020223130 its reverse (3132202001112), we get a palindrome (24242222224242).

The spelling of 21110020223130 in words is "twenty-one trillion, one hundred ten billion, twenty million, two hundred twenty-three thousand, one hundred thirty".