210100102120 has 64 divisors (see below), whose sum is σ = 481695984000. Its totient is φ = 82450921728.

The previous prime is 210100102111. The next prime is 210100102171. The reversal of 210100102120 is 21201001012.

210100102120 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 (10).

It is a junction number, because it is equal to n+sod(n) for n = 210100102097 and 210100102106.

It is an unprimeable number.

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, 1098586 + ... + 1275574.

It is an arithmetic number, because the mean of its divisors is an integer number (7526499750).

Almost surely, 2^210100102120 is an apocalyptic number.

210100102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210100102120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240847992000).

210100102120 is an abundant number, since it is smaller than the sum of its proper divisors (271595881880).

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

210100102120 is a wasteful number, since it uses less digits than its factorization.

210100102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177562 (or 177558 counting only the distinct ones).

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

Adding to 210100102120 its reverse (21201001012), we get a palindrome (231301103132).

The spelling of 210100102120 in words is "two hundred ten billion, one hundred million, one hundred two thousand, one hundred twenty".