20111222104 has 16 divisors (see below), whose sum is σ = 37710226800. Its totient is φ = 10055161632.

The previous prime is 20111222083. The next prime is 20111222107. The reversal of 20111222104 is 40122211102.

It is a super-2 number, since 2×20111222104² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111222107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205954 + ... + 287470.

It is an arithmetic number, because the mean of its divisors is an integer number (2356889175).

Almost surely, 2^20111222104 is an apocalyptic number.

It is an amenable number.

20111222104 is a deficient number, since it is larger than the sum of its proper divisors (17599004696).

20111222104 is a wasteful number, since it uses less digits than its factorization.

20111222104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112362 (or 112358 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20111222104 its reverse (40122211102), we get a palindrome (60233433206).

The spelling of 20111222104 in words is "twenty billion, one hundred eleven million, two hundred twenty-two thousand, one hundred four".