212000101221009 has 16 divisors (see below), whose sum is σ = 283067593283840. Its totient is φ = 141133007957760.

The previous prime is 212000101221001. The next prime is 212000101221089. The reversal of 212000101221009 is 900122101000212.

It is not a de Polignac number, because 212000101221009 - 2³ = 212000101221001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212000101221001) 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, 374168889 + ... + 374735049.

It is an arithmetic number, because the mean of its divisors is an integer number (17691724580240).

Almost surely, 2^{212000101221009} is an apocalyptic number.

It is an amenable number.

212000101221009 is a deficient number, since it is larger than the sum of its proper divisors (71067492062831).

212000101221009 is a wasteful number, since it uses less digits than its factorization.

212000101221009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742920.

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

The spelling of 212000101221009 in words is "two hundred twelve trillion, one hundred one million, two hundred twenty-one thousand, nine".