201099656 has 16 divisors (see below), whose sum is σ = 377233740. Its totient is φ = 100504000.

The previous prime is 201099653. The next prime is 201099677. The reversal of 201099656 is 656990102.

201099656 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 168220900 + 32878756 = 12970^2 + 5734^2 .

It is not an unprimeable number, because it can be changed into a prime (201099653) 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, 19406 + ... + 27906.

Almost surely, 2^201099656 is an apocalyptic number.

It is an amenable number.

201099656 is a deficient number, since it is larger than the sum of its proper divisors (176134084).

201099656 is a wasteful number, since it uses less digits than its factorization.

201099656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11464 (or 11460 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 201099656 is about 14180.9610393654. The cubic root of 201099656 is about 585.8733938105.

The spelling of 201099656 in words is "two hundred one million, ninety-nine thousand, six hundred fifty-six".