210120029999 has 8 divisors (see below), whose sum is σ = 229228544592. Its totient is φ = 191012631040.

The previous prime is 210120029981. The next prime is 210120030023. The reversal of 210120029999 is 999920021012.

It is a happy number.

210120029999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210120029999 - 2²⁴ = 210103252783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120029299) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 142607 + ... + 663759.

It is an arithmetic number, because the mean of its divisors is an integer number (28653568074).

Almost surely, 2^210120029999 is an apocalyptic number.

210120029999 is a deficient number, since it is larger than the sum of its proper divisors (19108514593).

210120029999 is a wasteful number, since it uses less digits than its factorization.

210120029999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557817.

The product of its (nonzero) digits is 52488, while the sum is 44.

The spelling of 210120029999 in words is "two hundred ten billion, one hundred twenty million, twenty-nine thousand, nine hundred ninety-nine".