210120110000 has 100 divisors (see below), whose sum is σ = 513226521192. Its totient is φ = 83303808000.

The previous prime is 210120109993. The next prime is 210120110003. The reversal of 210120110000 is 11021012.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 210120110000.

It is not an unprimeable number, because it can be changed into a prime (210120110003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1037027 + ... + 1222973.

Almost surely, 2^210120110000 is an apocalyptic number.

210120110000 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 210120110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256613260596).

210120110000 is an abundant number, since it is smaller than the sum of its proper divisors (303106411192).

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

210120110000 is a wasteful number, since it uses less digits than its factorization.

210120110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186088 (or 186067 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 210120110000 its reverse (11021012), we get a palindrome (210131131012).

The spelling of 210120110000 in words is "two hundred ten billion, one hundred twenty million, one hundred ten thousand".