210212020109 has 16 divisors (see below), whose sum is σ = 258738654720. Its totient is φ = 166311204480.

The previous prime is 210212020093. The next prime is 210212020111. The reversal of 210212020109 is 901020212012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210212020109 - 2⁴ = 210212020093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212020199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1604924 + ... + 1730954.

It is an arithmetic number, because the mean of its divisors is an integer number (16171165920).

Almost surely, 2^210212020109 is an apocalyptic number.

It is an amenable number.

210212020109 is a deficient number, since it is larger than the sum of its proper divisors (48526634611).

210212020109 is a wasteful number, since it uses less digits than its factorization.

210212020109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144380.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 210212020109 in words is "two hundred ten billion, two hundred twelve million, twenty thousand, one hundred nine".