20122111112 has 32 divisors (see below), whose sum is σ = 37986822720. Its totient is φ = 9992472000.

The previous prime is 20122110997. The next prime is 20122111127. The reversal of 20122111112 is 21111122102.

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, 914237 + ... + 935987.

It is an arithmetic number, because the mean of its divisors is an integer number (1187088210).

Almost surely, 2^20122111112 is an apocalyptic number.

It is an amenable number.

20122111112 is a deficient number, since it is larger than the sum of its proper divisors (17864711608).

20122111112 is a wasteful number, since it uses less digits than its factorization.

20122111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22541 (or 22537 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20122111112 its reverse (21111122102), we get a palindrome (41233233214).

The spelling of 20122111112 in words is "twenty billion, one hundred twenty-two million, one hundred eleven thousand, one hundred twelve".