212002002020122 has 4 divisors (see below), whose sum is σ = 318003003030186. Its totient is φ = 106001001010060.

The previous prime is 212002002020089. The next prime is 212002002020131. The reversal of 212002002020122 is 221020200200212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 137699170851841 + 74302831168281 = 11734529^2 + 8619909^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212002002020096 and 212002002020105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53000500505029 + ... + 53000500505032.

Almost surely, 2^{212002002020122} is an apocalyptic number.

212002002020122 is a deficient number, since it is larger than the sum of its proper divisors (106001001010064).

212002002020122 is a wasteful number, since it uses less digits than its factorization.

212002002020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106001001010063.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 212002002020122 its reverse (221020200200212), we get a palindrome (433022202220334).

The spelling of 212002002020122 in words is "two hundred twelve trillion, two billion, two million, twenty thousand, one hundred twenty-two".