210000120210000 has 200 divisors, whose sum is σ = 753231543250560. Its totient is φ = 56000031984000.

The previous prime is 210000120209989. The next prime is 210000120210011. The reversal of 210000120210000 is 12021000012.

It is an interprime number because it is at equal distance from previous prime (210000120209989) and next prime (210000120210011).

It is a tau number, because it is divible by the number of its divisors (200).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 388619112 + ... + 389159111.

Almost surely, 2^{210000120210000} is an apocalyptic number.

210000120210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210000120210000 is an abundant number, since it is smaller than the sum of its proper divisors (543231423040560).

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

210000120210000 is an equidigital number, since it uses as much as digits as its factorization.

210000120210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777778260 (or 777778233 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 210000120210000 its reverse (12021000012), we get a palindrome (210012141210012).

The spelling of 210000120210000 in words is "two hundred ten trillion, one hundred twenty million, two hundred ten thousand".