221230230120 has 96 divisors (see below), whose sum is σ = 719064426600. Its totient is φ = 58989298176.

The previous prime is 221230230119. The next prime is 221230230191. The reversal of 221230230120 is 21032032122.

221230230120 is a `hidden beast` number, since 2 + 212 + 302 + 30 + 120 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 215661787236 + 5568442884 = 464394^2 + 74622^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 221230230093 and 221230230102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5259894 + ... + 5301786.

Almost surely, 2^221230230120 is an apocalyptic number.

221230230120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221230230120 is an abundant number, since it is smaller than the sum of its proper divisors (497834196480).

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

221230230120 is a wasteful number, since it uses less digits than its factorization.

221230230120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56579 (or 56572 counting only the distinct ones).

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

Adding to 221230230120 its reverse (21032032122), we get a palindrome (242262262242).

It can be divided in two parts, 2212302 and 30120, that added together give a palindrome (2242422).

The spelling of 221230230120 in words is "two hundred twenty-one billion, two hundred thirty million, two hundred thirty thousand, one hundred twenty".