21232220130 has 96 divisors (see below), whose sum is σ = 63391947840. Its totient is φ = 4876295040.

The previous prime is 21232220071. The next prime is 21232220183. The reversal of 21232220130 is 3102223212.

21232220130 is a `hidden beast` number, since 212 + 322 + 2 + 0 + 130 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 545577 + ... + 583196.

It is an arithmetic number, because the mean of its divisors is an integer number (660332790).

Almost surely, 2^21232220130 is an apocalyptic number.

21232220130 is an abundant number, since it is smaller than the sum of its proper divisors (42159727710).

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

21232220130 is a wasteful number, since it uses less digits than its factorization.

21232220130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128816 (or 1128813 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21232220130 its reverse (3102223212), we get a palindrome (24334443342).

The spelling of 21232220130 in words is "twenty-one billion, two hundred thirty-two million, two hundred twenty thousand, one hundred thirty".