212012002000221 has 16 divisors (see below), whose sum is σ = 283068527230464. Its totient is φ = 141148439563824.

The previous prime is 212012002000133. The next prime is 212012002000237. The reversal of 212012002000221 is 122000200210212.

It is not a de Polignac number, because 212012002000221 - 2²⁹ = 212011465129309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212012002000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012002000261) 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, 20865376 + ... + 29315318.

It is an arithmetic number, because the mean of its divisors is an integer number (17691782951904).

Almost surely, 2^{212012002000221} is an apocalyptic number.

It is an amenable number.

212012002000221 is a deficient number, since it is larger than the sum of its proper divisors (71056525230243).

212012002000221 is a wasteful number, since it uses less digits than its factorization.

212012002000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8461360.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212012002000221 its reverse (122000200210212), we get a palindrome (334012202210433).

The spelling of 212012002000221 in words is "two hundred twelve trillion, twelve billion, two million, two hundred twenty-one", and thus it is an aban number.