221204370844346 has 16 divisors (see below), whose sum is σ = 331868755269504. Its totient is φ = 110581453128384.

The previous prime is 221204370844291. The next prime is 221204370844393. The reversal of 221204370844346 is 643448073402122.

It is a junction number, because it is equal to n+sod(n) for n = 221204370844294 and 221204370844303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786232370 + ... + 786513666.

It is an arithmetic number, because the mean of its divisors is an integer number (20741797204344).

Almost surely, 2^{221204370844346} is an apocalyptic number.

221204370844346 is a deficient number, since it is larger than the sum of its proper divisors (110664384425158).

221204370844346 is a wasteful number, since it uses less digits than its factorization.

221204370844346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353605.

The product of its (nonzero) digits is 6193152, while the sum is 50.

The spelling of 221204370844346 in words is "two hundred twenty-one trillion, two hundred four billion, three hundred seventy million, eight hundred forty-four thousand, three hundred forty-six".