20442112012 has 24 divisors (see below), whose sum is σ = 40887695520. Its totient is φ = 8760161280.

The previous prime is 20442111947. The next prime is 20442112013. The reversal of 20442112012 is 21021124402.

It is a super-2 number, since 2×20442112012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20442112013) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 419562 + ... + 465742.

It is an arithmetic number, because the mean of its divisors is an integer number (1703653980).

Almost surely, 2^20442112012 is an apocalyptic number.

It is an amenable number.

20442112012 is an abundant number, since it is smaller than the sum of its proper divisors (20445583508).

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

20442112012 is a wasteful number, since it uses less digits than its factorization.

20442112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62001 (or 61999 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20442112012 its reverse (21021124402), we get a palindrome (41463236414).

The spelling of 20442112012 in words is "twenty billion, four hundred forty-two million, one hundred twelve thousand, twelve".