221321104130 has 32 divisors (see below), whose sum is σ = 455318527104. Its totient is φ = 75876621696.

The previous prime is 221321104019. The next prime is 221321104159. The reversal of 221321104130 is 31401123122.

It is a super-2 number, since 2×221321104130² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1088174 + ... + 1275446.

It is an arithmetic number, because the mean of its divisors is an integer number (14228703972).

Almost surely, 2^221321104130 is an apocalyptic number.

221321104130 is an abundant number, since it is smaller than the sum of its proper divisors (233997422974).

221321104130 is a wasteful number, since it uses less digits than its factorization.

221321104130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204170.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221321104130 its reverse (31401123122), we get a palindrome (252722227252).

The spelling of 221321104130 in words is "two hundred twenty-one billion, three hundred twenty-one million, one hundred four thousand, one hundred thirty".