210021211000109 has 8 divisors (see below), whose sum is σ = 210938409232320. Its totient is φ = 209104911544896.

The previous prime is 210021211000091. The next prime is 210021211000177. The reversal of 210021211000109 is 901000112120012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210021211000109 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 (210021211000709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224225879 + ... + 225160580.

It is an arithmetic number, because the mean of its divisors is an integer number (26367301154040).

Almost surely, 2^{210021211000109} is an apocalyptic number.

It is an amenable number.

210021211000109 is a deficient number, since it is larger than the sum of its proper divisors (917198232211).

210021211000109 is a wasteful number, since it uses less digits than its factorization.

210021211000109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449388499.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 210021211000109 in words is "two hundred ten trillion, twenty-one billion, two hundred eleven million, one hundred nine", and thus it is an aban number.