10101020202100 has 18 divisors (see below), whose sum is σ = 21919213838774. Its totient is φ = 4040408080800.

The previous prime is 10101020202083. The next prime is 10101020202109. The reversal of 10101020202100 is 120202010101.

It can be written as a sum of positive squares in 3 ways, for example, as 2821956497424 + 7279063704676 = 1679868^2 + 2697974^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101020202109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50505100911 + ... + 50505101110.

Almost surely, 2^{10101020202100} is an apocalyptic number.

10101020202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10101020202100 is an abundant number, since it is smaller than the sum of its proper divisors (11818193636674).

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

10101020202100 is a wasteful number, since it uses less digits than its factorization.

10101020202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101010202035 (or 101010202028 counting only the distinct ones).

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

Adding to 10101020202100 its reverse (120202010101), we get a palindrome (10221222212201).

The spelling of 10101020202100 in words is "ten trillion, one hundred one billion, twenty million, two hundred two thousand, one hundred".