20112211122122 has 16 divisors (see below), whose sum is σ = 34478522999232. Its totient is φ = 8619407354880.

The previous prime is 20112211122121. The next prime is 20112211122131. The reversal of 20112211122122 is 22122111221102.

It is a junction number, because it is equal to n+sod(n) for n = 20112211122094 and 20112211122103.

It is not an unprimeable number, because it can be changed into a prime (20112211122121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8184503 + ... + 10354250.

It is an arithmetic number, because the mean of its divisors is an integer number (2154907687452).

Almost surely, 2^{20112211122122} is an apocalyptic number.

20112211122122 is a deficient number, since it is larger than the sum of its proper divisors (14366311877110).

20112211122122 is a wasteful number, since it uses less digits than its factorization.

20112211122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18616253.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 20112211122122 its reverse (22122111221102), we get a palindrome (42234322343224).

The spelling of 20112211122122 in words is "twenty trillion, one hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-two".