212011220201212 has 24 divisors (see below), whose sum is σ = 390712681553040. Its totient is φ = 100383759671040.

The previous prime is 212011220201203. The next prime is 212011220201293. The reversal of 212011220201212 is 212102022110212.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 212011220201212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591594589 + ... + 591952852.

It is an arithmetic number, because the mean of its divisors is an integer number (16279695064710).

Almost surely, 2^{212011220201212} is an apocalyptic number.

It is an amenable number.

212011220201212 is a deficient number, since it is larger than the sum of its proper divisors (178701461351828).

212011220201212 is a wasteful number, since it uses less digits than its factorization.

212011220201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183549821 (or 1183549819 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212011220201212 its reverse (212102022110212), we get a palindrome (424113242311424).

The spelling of 212011220201212 in words is "two hundred twelve trillion, eleven billion, two hundred twenty million, two hundred one thousand, two hundred twelve".