221943102246 has 32 divisors (see below), whose sum is σ = 493223234400. Its totient is φ = 73978583040.

The previous prime is 221943102223. The next prime is 221943102247. The reversal of 221943102246 is 642201349122.

It is a happy number.

221943102246 is a `hidden beast` number, since 2 + 219 + 431 + 0 + 2 + 2 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 221943102246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221943102247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2393190 + ... + 2484198.

It is an arithmetic number, because the mean of its divisors is an integer number (15413226075).

Almost surely, 2^221943102246 is an apocalyptic number.

221943102246 is an abundant number, since it is smaller than the sum of its proper divisors (271280132154).

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

221943102246 is a wasteful number, since it uses less digits than its factorization.

221943102246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136181 (or 136175 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 221943102246 in words is "two hundred twenty-one billion, nine hundred forty-three million, one hundred two thousand, two hundred forty-six".