221213104321004 has 12 divisors (see below), whose sum is σ = 392425986432984. Its totient is φ = 109091393911584.

The previous prime is 221213104320983. The next prime is 221213104321061. The reversal of 221213104321004 is 400123401312122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378789561902 + ... + 378789562485.

It is an arithmetic number, because the mean of its divisors is an integer number (32702165536082).

Almost surely, 2^{221213104321004} is an apocalyptic number.

It is an amenable number.

221213104321004 is a deficient number, since it is larger than the sum of its proper divisors (171212882111980).

221213104321004 is a wasteful number, since it uses less digits than its factorization.

221213104321004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757579124464 (or 757579124462 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 221213104321004 its reverse (400123401312122), we get a palindrome (621336505633126).

The spelling of 221213104321004 in words is "two hundred twenty-one trillion, two hundred thirteen billion, one hundred four million, three hundred twenty-one thousand, four".