221245879383 has 32 divisors (see below), whose sum is σ = 332816326080. Its totient is φ = 145233907200.

The previous prime is 221245879363. The next prime is 221245879399. The reversal of 221245879383 is 383978542122.

221245879383 is a `hidden beast` number, since 2 + 2 + 1 + 24 + 587 + 9 + 38 + 3 = 666.

It is not a de Polignac number, because 221245879383 - 2¹³ = 221245871191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221245879333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1091185 + ... + 1277957.

It is an arithmetic number, because the mean of its divisors is an integer number (10400510190).

Almost surely, 2^221245879383 is an apocalyptic number.

221245879383 is a deficient number, since it is larger than the sum of its proper divisors (111570446697).

221245879383 is a wasteful number, since it uses less digits than its factorization.

221245879383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187456 (or 187450 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 221245879383 in words is "two hundred twenty-one billion, two hundred forty-five million, eight hundred seventy-nine thousand, three hundred eighty-three".