221081703 has 8 divisors (see below), whose sum is σ = 304940400. Its totient is φ = 142305408.

The previous prime is 221081683. The next prime is 221081723. The reversal of 221081703 is 307180122.

It is an interprime number because it is at equal distance from previous prime (221081683) and next prime (221081723).

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

It is not a de Polignac number, because 221081703 - 2⁵ = 221081671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221081723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1270498 + ... + 1270671.

It is an arithmetic number, because the mean of its divisors is an integer number (38117550).

Almost surely, 2^221081703 is an apocalyptic number.

221081703 is a deficient number, since it is larger than the sum of its proper divisors (83858697).

221081703 is a wasteful number, since it uses less digits than its factorization.

221081703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541201.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 221081703 is about 14868.8164626510. The cubic root of 221081703 is about 604.6688559616.

The spelling of 221081703 in words is "two hundred twenty-one million, eighty-one thousand, seven hundred three".