221033103312987 has 24 divisors (see below), whose sum is σ = 373365625977344. Its totient is φ = 123367313475504.

The previous prime is 221033103312971. The next prime is 221033103313031. The reversal of 221033103312987 is 789213301330122.

221033103312987 is a `hidden beast` number, since 2 + 2 + 10 + 3 + 3 + 10 + 331 + 298 + 7 = 666.

It is not a de Polignac number, because 221033103312987 - 2⁴ = 221033103312971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221033103312937) 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 23 ways as a sum of consecutive naturals, for example, 40796066563 + ... + 40796071980.

Almost surely, 2^{221033103312987} is an apocalyptic number.

221033103312987 is a deficient number, since it is larger than the sum of its proper divisors (152332522664357).

221033103312987 is a wasteful number, since it uses less digits than its factorization.

221033103312987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81592138599 (or 81592138596 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 221033103312987 in words is "two hundred twenty-one trillion, thirty-three billion, one hundred three million, three hundred twelve thousand, nine hundred eighty-seven".