221073842 has 8 divisors (see below), whose sum is σ = 361757232. Its totient is φ = 100488100.

The previous prime is 221073841. The next prime is 221073851. The reversal of 221073842 is 248370122.

221073842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (221073841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5024384 + ... + 5024427.

It is an arithmetic number, because the mean of its divisors is an integer number (45219654).

Almost surely, 2^221073842 is an apocalyptic number.

221073842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221073842 is a deficient number, since it is larger than the sum of its proper divisors (140683390).

221073842 is a wasteful number, since it uses less digits than its factorization.

221073842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048824.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 221073842 is about 14868.5521151187. The cubic root of 221073842 is about 604.6616891417.

The spelling of 221073842 in words is "two hundred twenty-one million, seventy-three thousand, eight hundred forty-two".