210120030000 has 300 divisors, whose sum is σ = 737266592920. Its totient is φ = 55845504000.

The previous prime is 210120029981. The next prime is 210120030023. The reversal of 210120030000 is 30021012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (300).

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

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 28166271 + ... + 28173729.

Almost surely, 2^210120030000 is an apocalyptic number.

210120030000 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 210120030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368633296460).

210120030000 is an abundant number, since it is smaller than the sum of its proper divisors (527146562920).

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

210120030000 is a wasteful number, since it uses less digits than its factorization.

210120030000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7806 (or 7782 counting only the distinct ones).

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

Adding to 210120030000 its reverse (30021012), we get a palindrome (210150051012).

The spelling of 210120030000 in words is "two hundred ten billion, one hundred twenty million, thirty thousand".