21210100210118 has 8 divisors (see below), whose sum is σ = 31815587201160. Its totient is φ = 10604904476400.

The previous prime is 21210100210099. The next prime is 21210100210121. The reversal of 21210100210118 is 81101200101212.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21210100210118.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72632183 + ... + 72923618.

It is an arithmetic number, because the mean of its divisors is an integer number (3976948400145).

Almost surely, 2^{21210100210118} is an apocalyptic number.

21210100210118 is a deficient number, since it is larger than the sum of its proper divisors (10605486991042).

21210100210118 is a wasteful number, since it uses less digits than its factorization.

21210100210118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145628662.

The product of its (nonzero) digits is 64, while the sum is 20.

The spelling of 21210100210118 in words is "twenty-one trillion, two hundred ten billion, one hundred million, two hundred ten thousand, one hundred eighteen".