212021045163122 has 16 divisors (see below), whose sum is σ = 362642330641752. Its totient is φ = 92099639527680.

The previous prime is 212021045163121. The next prime is 212021045163163. The reversal of 212021045163122 is 221361540120212.

It can be written as a sum of positive squares in 4 ways, for example, as 119119958095681 + 92901087067441 = 10914209^2 + 9638521^2 .

It is not an unprimeable number, because it can be changed into a prime (212021045163121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239842810829 + ... + 239842811712.

Almost surely, 2^{212021045163122} is an apocalyptic number.

212021045163122 is a deficient number, since it is larger than the sum of its proper divisors (150621285478630).

212021045163122 is a wasteful number, since it uses less digits than its factorization.

212021045163122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479685622573.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 212021045163122 its reverse (221361540120212), we get a palindrome (433382585283334).

The spelling of 212021045163122 in words is "two hundred twelve trillion, twenty-one billion, forty-five million, one hundred sixty-three thousand, one hundred twenty-two".