221210310404 has 24 divisors (see below), whose sum is σ = 407651042400. Its totient is φ = 104743108800.

The previous prime is 221210310361. The next prime is 221210310407. The reversal of 221210310404 is 404013012122.

221210310404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221210310407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368297 + ... + 760304.

It is an arithmetic number, because the mean of its divisors is an integer number (16985460100).

Almost surely, 2^221210310404 is an apocalyptic number.

It is an amenable number.

221210310404 is a deficient number, since it is larger than the sum of its proper divisors (186440731996).

221210310404 is a wasteful number, since it uses less digits than its factorization.

221210310404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131203 (or 1131201 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221210310404 its reverse (404013012122), we get a palindrome (625223322526).

The spelling of 221210310404 in words is "two hundred twenty-one billion, two hundred ten million, three hundred ten thousand, four hundred four".