20012122112 has 30 divisors (see below), whose sum is σ = 40023055548. Its totient is φ = 10006052864.

The previous prime is 20012122111. The next prime is 20012122129. The reversal of 20012122112 is 21122121002.

It is not an unprimeable number, because it can be changed into a prime (20012122111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594338 + ... + 627105.

Almost surely, 2^20012122112 is an apocalyptic number.

It is an amenable number.

20012122112 is a deficient number, since it is larger than the sum of its proper divisors (20010933436).

20012122112 is an frugal number, since it uses more digits than its factorization.

20012122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221471 (or 1221445 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20012122112 its reverse (21122121002), we get a palindrome (41134243114).

The spelling of 20012122112 in words is "twenty billion, twelve million, one hundred twenty-two thousand, one hundred twelve".