221243530104 has 48 divisors (see below), whose sum is σ = 599416462320. Its totient is φ = 73721352960.

The previous prime is 221243530093. The next prime is 221243530169. The reversal of 221243530104 is 401035342122.

221243530104 is a `hidden beast` number, since 2 + 2 + 1 + 24 + 3 + 530 + 104 = 666.

It is a super-2 number, since 2×221243530104² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349537 + ... + 751440.

It is an arithmetic number, because the mean of its divisors is an integer number (12487842965).

Almost surely, 2^221243530104 is an apocalyptic number.

221243530104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221243530104 is an abundant number, since it is smaller than the sum of its proper divisors (378172932216).

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

221243530104 is a wasteful number, since it uses less digits than its factorization.

221243530104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103780 (or 1103773 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 221243530104 its reverse (401035342122), we get a palindrome (622278872226).

The spelling of 221243530104 in words is "two hundred twenty-one billion, two hundred forty-three million, five hundred thirty thousand, one hundred four".