221481038 has 8 divisors (see below), whose sum is σ = 341200632. Its totient is φ = 107747496.

The previous prime is 221480989. The next prime is 221481041. The reversal of 221481038 is 830184122.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221481038.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1496420 + ... + 1496567.

It is an arithmetic number, because the mean of its divisors is an integer number (42650079).

Almost surely, 2^221481038 is an apocalyptic number.

221481038 is a deficient number, since it is larger than the sum of its proper divisors (119719594).

221481038 is a wasteful number, since it uses less digits than its factorization.

221481038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993026.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 221481038 is about 14882.2390116541. The cubic root of 221481038 is about 605.0327036484.

The spelling of 221481038 in words is "two hundred twenty-one million, four hundred eighty-one thousand, thirty-eight".