20122112 has 20 divisors (see below), whose sum is σ = 40205946.
Its totient is φ = 10060800.
The previous prime is 20122093. The next prime is 20122133. The reversal of 20122112 is 21122102.
Adding to 20122112 its reverse (21122102), we get a palindrome (41244214).
It is a happy number.
It can be written as a sum of positive squares in only one way, i.e., 18524416 + 1597696 = 4304^2 + 1264^2
It is a junction number, because it is equal to n+sod(n) for n = 20122093 and 20122102.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19139 + ... + 20162.
Almost surely, 220122112 is an apocalyptic number.
It is an amenable number.
20122112 is a deficient number, since it is larger than the sum of its proper divisors (20083834).
20122112 is an frugal number, since it uses more digits than its factorization.
20122112 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 39319 (or 39303 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 11.
The square root of 20122112 is about 4485.7677157873.
The cubic root of 20122112 is about 271.9930794087.
The spelling of 20122112 in words is "twenty million, one hundred twenty-two thousand, one hundred twelve".