102201110020 has 24 divisors (see below), whose sum is σ = 215081927424. Its totient is φ = 40792901856.

The previous prime is 102201109999. The next prime is 102201110021. The reversal of 102201110020 is 20011102201.

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

It is a junction number, because it is equal to n+sod(n) for n = 102201109979 and 102201110006.

It is not an unprimeable number, because it can be changed into a prime (102201110021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5461812 + ... + 5480491.

It is an arithmetic number, because the mean of its divisors is an integer number (8961746976).

Almost surely, 2^102201110020 is an apocalyptic number.

102201110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102201110020 is an abundant number, since it is smaller than the sum of its proper divisors (112880817404).

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

102201110020 is a wasteful number, since it uses less digits than its factorization.

102201110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10942779 (or 10942777 counting only the distinct ones).

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

Adding to 102201110020 its reverse (20011102201), we get a palindrome (122212212221).

The spelling of 102201110020 in words is "one hundred two billion, two hundred one million, one hundred ten thousand, twenty".