210100021212009 has 32 divisors (see below), whose sum is σ = 296917310448000. Its totient is φ = 131691695357952.

The previous prime is 210100021211989. The next prime is 210100021212031. The reversal of 210100021212009 is 900212120001012.

It is not a de Polignac number, because 210100021212009 - 2⁷ = 210100021211881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210100021212409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 915357742 + ... + 915587240.

It is an arithmetic number, because the mean of its divisors is an integer number (9278665951500).

Almost surely, 2^{210100021212009} is an apocalyptic number.

It is an amenable number.

210100021212009 is a deficient number, since it is larger than the sum of its proper divisors (86817289235991).

210100021212009 is a wasteful number, since it uses less digits than its factorization.

210100021212009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247929.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 210100021212009 in words is "two hundred ten trillion, one hundred billion, twenty-one million, two hundred twelve thousand, nine".