212002202012122 has 8 divisors (see below), whose sum is σ = 319185471431700. Its totient is φ = 105607044868224.

The previous prime is 212002202011967. The next prime is 212002202012141. The reversal of 212002202012122 is 221210202200212.

It can be written as a sum of positive squares in 2 ways, for example, as 164622782352681 + 47379419659441 = 12830541^2 + 6883271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212002202012122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197028068247 + ... + 197028069322.

Almost surely, 2^{212002202012122} is an apocalyptic number.

212002202012122 is a deficient number, since it is larger than the sum of its proper divisors (107183269419578).

212002202012122 is a wasteful number, since it uses less digits than its factorization.

212002202012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394056137840.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212002202012122 its reverse (221210202200212), we get a palindrome (433212404212334).

The spelling of 212002202012122 in words is "two hundred twelve trillion, two billion, two hundred two million, twelve thousand, one hundred twenty-two".