20111122 has 8 divisors (see below), whose sum is σ = 30617136. Its totient is φ = 9905412.

The previous prime is 20111093. The next prime is 20111137. The reversal of 20111122 is 22111102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20111099 and 20111108.

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, 74908 + ... + 75175.

It is an arithmetic number, because the mean of its divisors is an integer number (3827142).

Almost surely, 2^20111122 is an apocalyptic number.

20111122 is a deficient number, since it is larger than the sum of its proper divisors (10506014).

20111122 is a wasteful number, since it uses less digits than its factorization.

20111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150152.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 20111122 is about 4484.5425630715. The cubic root of 20111122 is about 271.9435526607.

Adding to 20111122 its reverse (22111102), we get a palindrome (42222224).

It can be divided in two parts, 20111 and 122, that multiplied together give a palindrome (2453542).

The spelling of 20111122 in words is "twenty million, one hundred eleven thousand, one hundred twenty-two".