221131112112002 has 8 divisors (see below), whose sum is σ = 332333322043212. Its totient is φ = 110353338097600.

The previous prime is 221131112111999. The next prime is 221131112112049. The reversal of 221131112112002 is 200211211131122.

It can be written as a sum of positive squares in 2 ways, for example, as 217813646937121 + 3317465174881 = 14758511^2 + 1821391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 106108977899 + ... + 106108979982.

Almost surely, 2^{221131112112002} is an apocalyptic number.

221131112112002 is a deficient number, since it is larger than the sum of its proper divisors (111202209931210).

221131112112002 is a wasteful number, since it uses less digits than its factorization.

221131112112002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212217958404.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 221131112112002 its reverse (200211211131122), we get a palindrome (421342323243124).

The spelling of 221131112112002 in words is "two hundred twenty-one trillion, one hundred thirty-one billion, one hundred twelve million, one hundred twelve thousand, two".