102201020110020 has 48 divisors (see below), whose sum is σ = 308175383718720. Its totient is φ = 25157174180736.

The previous prime is 102201020109913. The next prime is 102201020110043. The reversal of 102201020110020 is 20011020102201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102201020109978 and 102201020110005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65513473650 + ... + 65513475209.

It is an arithmetic number, because the mean of its divisors is an integer number (6420320494140).

Almost surely, 2^{102201020110020} is an apocalyptic number.

102201020110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102201020110020 is an abundant number, since it is smaller than the sum of its proper divisors (205974363608700).

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

102201020110020 is a wasteful number, since it uses less digits than its factorization.

102201020110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131026948884 (or 131026948882 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102201020110020 its reverse (20011020102201), we get a palindrome (122212040212221).

The spelling of 102201020110020 in words is "one hundred two trillion, two hundred one billion, twenty million, one hundred ten thousand, twenty".