221701725734 has 16 divisors (see below), whose sum is σ = 333422578800. Its totient is φ = 110560934400.

The previous prime is 221701725667. The next prime is 221701725769. The reversal of 221701725734 is 437527107122.

It is a junction number, because it is equal to n+sod(n) for n = 221701725691 and 221701725700.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11244617 + ... + 11264315.

It is an arithmetic number, because the mean of its divisors is an integer number (20838911175).

Almost surely, 2^221701725734 is an apocalyptic number.

221701725734 is a deficient number, since it is larger than the sum of its proper divisors (111720853066).

221701725734 is a wasteful number, since it uses less digits than its factorization.

221701725734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34135.

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 221701725734 in words is "two hundred twenty-one billion, seven hundred one million, seven hundred twenty-five thousand, seven hundred thirty-four".