20212112122 has 16 divisors (see below), whose sum is σ = 30624832512. Its totient is φ = 10003877200.

The previous prime is 20212112119. The next prime is 20212112131. The reversal of 20212112122 is 22121121202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20212112096 and 20212112105.

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, 1427763 + ... + 1441849.

It is an arithmetic number, because the mean of its divisors is an integer number (1914052032).

Almost surely, 2^20212112122 is an apocalyptic number.

20212112122 is a deficient number, since it is larger than the sum of its proper divisors (10412720390).

20212112122 is a wasteful number, since it uses less digits than its factorization.

20212112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21293.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20212112122 its reverse (22121121202), we get a palindrome (42333233324).

The spelling of 20212112122 in words is "twenty billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-two".