20212122012122 has 16 divisors (see below), whose sum is σ = 30660134572872. Its totient is φ = 9992350171200.

The previous prime is 20212122012107. The next prime is 20212122012143. The reversal of 20212122012122 is 22121022121202.

It can be written as a sum of positive squares in 4 ways, for example, as 17108820510961 + 3103301501161 = 4136281^2 + 1761619^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20212122012094 and 20212122012103.

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 in 7 ways as a sum of consecutive naturals, for example, 68105693 + ... + 68401824.

Almost surely, 2^{20212122012122} is an apocalyptic number.

20212122012122 is a deficient number, since it is larger than the sum of its proper divisors (10448012560750).

20212122012122 is a wasteful number, since it uses less digits than its factorization.

20212122012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136508353.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20212122012122 its reverse (22121022121202), we get a palindrome (42333144133324).

The spelling of 20212122012122 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-two million, twelve thousand, one hundred twenty-two".