210120003000 has 384 divisors, whose sum is σ = 733331776320. Its totient is φ = 54223948800.

The previous prime is 210120002977. The next prime is 210120003007. The reversal of 210120003000 is 300021012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120003007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 65599399 + ... + 65602601.

Almost surely, 2^210120003000 is an apocalyptic number.

210120003000 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 210120003000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366665888160).

210120003000 is an abundant number, since it is smaller than the sum of its proper divisors (523211773320).

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

210120003000 is a wasteful number, since it uses less digits than its factorization.

210120003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464 (or 3447 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 210120003000 its reverse (300021012), we get a palindrome (210420024012).

The spelling of 210120003000 in words is "two hundred ten billion, one hundred twenty million, three thousand".