201015722106 has 24 divisors (see below), whose sum is σ = 435693765780. Its totient is φ = 66980671296.

The previous prime is 201015722099. The next prime is 201015722129. The reversal of 201015722106 is 601227510102.

201015722106 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 175260286881 + 25755435225 = 418641^2 + 160485^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201015722106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1996965 + ... + 2095208.

Almost surely, 2^201015722106 is an apocalyptic number.

201015722106 is an abundant number, since it is smaller than the sum of its proper divisors (234678043674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201015722106 is a wasteful number, since it uses less digits than its factorization.

201015722106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094910 (or 4094907 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The spelling of 201015722106 in words is "two hundred one billion, fifteen million, seven hundred twenty-two thousand, one hundred six".