221702072200706 has 4 divisors (see below), whose sum is σ = 332553108301062. Its totient is φ = 110851036100352.

The previous prime is 221702072200673. The next prime is 221702072200723. The reversal of 221702072200706 is 607002270207122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 219016587025681 + 2685485175025 = 14799209^2 + 1638745^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221702072200706.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55425518050175 + ... + 55425518050178.

Almost surely, 2^{221702072200706} is an apocalyptic number.

221702072200706 is a deficient number, since it is larger than the sum of its proper divisors (110851036100356).

221702072200706 is a wasteful number, since it uses less digits than its factorization.

221702072200706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110851036100355.

The product of its (nonzero) digits is 65856, while the sum is 38.

The spelling of 221702072200706 in words is "two hundred twenty-one trillion, seven hundred two billion, seventy-two million, two hundred thousand, seven hundred six".