102021100200100 has 72 divisors (see below), whose sum is σ = 231016845225600. Its totient is φ = 39033215738880.

The previous prime is 102021100200059. The next prime is 102021100200109. The reversal of 102021100200100 is 1002001120201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (102021100200109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98529876 + ... + 99559924.

It is an arithmetic number, because the mean of its divisors is an integer number (3208567294800).

Almost surely, 2^{102021100200100} is an apocalyptic number.

102021100200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021100200100 is an abundant number, since it is smaller than the sum of its proper divisors (128995745025500).

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

102021100200100 is a wasteful number, since it uses less digits than its factorization.

102021100200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073149 (or 1073142 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102021100200100 its reverse (1002001120201), we get a palindrome (103023101320301).

The spelling of 102021100200100 in words is "one hundred two trillion, twenty-one billion, one hundred million, two hundred thousand, one hundred".