20621112 has 16 divisors (see below), whose sum is σ = 51552840. Its totient is φ = 6873696.

The previous prime is 20621089. The next prime is 20621131. The reversal of 20621112 is 21112602.

It is a junction number, because it is equal to n+sod(n) for n = 20621091 and 20621100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429583 + ... + 429630.

Almost surely, 2^20621112 is an apocalyptic number.

It is an amenable number.

20621112 is an abundant number, since it is smaller than the sum of its proper divisors (30931728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20621112 is a wasteful number, since it uses less digits than its factorization.

20621112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859222 (or 859218 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 20621112 is about 4541.0474562594. The cubic root of 20621112 is about 274.2230942738.

Adding to 20621112 its reverse (21112602), we get a palindrome (41733714).

The spelling of 20621112 in words is "twenty million, six hundred twenty-one thousand, one hundred twelve".