205221250706 has 8 divisors (see below), whose sum is σ = 308032946544. Its totient is φ = 102543601860.

The previous prime is 205221250691. The next prime is 205221250727. The reversal of 205221250706 is 607052122502.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33507920 + ... + 33514043.

It is an arithmetic number, because the mean of its divisors is an integer number (38504118318).

Almost surely, 2^205221250706 is an apocalyptic number.

205221250706 is a deficient number, since it is larger than the sum of its proper divisors (102811695838).

205221250706 is a wasteful number, since it uses less digits than its factorization.

205221250706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67023496.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 205221250706 in words is "two hundred five billion, two hundred twenty-one million, two hundred fifty thousand, seven hundred six".