212105503121422 has 16 divisors (see below), whose sum is σ = 318945106362960. Its totient is φ = 105790511356992.

The previous prime is 212105503121419. The next prime is 212105503121459. The reversal of 212105503121422 is 224121305501212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201533 + ... + 20631400.

It is an arithmetic number, because the mean of its divisors is an integer number (19934069147685).

Almost surely, 2^{212105503121422} is an apocalyptic number.

212105503121422 is a deficient number, since it is larger than the sum of its proper divisors (106839603241538).

212105503121422 is a wasteful number, since it uses less digits than its factorization.

212105503121422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21844947.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 212105503121422 its reverse (224121305501212), we get a palindrome (436226808622634).

The spelling of 212105503121422 in words is "two hundred twelve trillion, one hundred five billion, five hundred three million, one hundred twenty-one thousand, four hundred twenty-two".