201021102108 has 48 divisors (see below), whose sum is σ = 523784800000. Its totient is φ = 66670308144.

The previous prime is 201021102103. The next prime is 201021102187. The reversal of 201021102108 is 801201120102.

201021102108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021102101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4655158 + ... + 4698141.

Almost surely, 2^201021102108 is an apocalyptic number.

It is an amenable number.

201021102108 is an abundant number, since it is smaller than the sum of its proper divisors (322763697892).

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

201021102108 is a wasteful number, since it uses less digits than its factorization.

201021102108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9353511 (or 9353503 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The spelling of 201021102108 in words is "two hundred one billion, twenty-one million, one hundred two thousand, one hundred eight".