20112210444 has 24 divisors (see below), whose sum is σ = 47286727488. Its totient is φ = 6652893520.

The previous prime is 20112210439. The next prime is 20112210491. The reversal of 20112210444 is 44401221102.

It is a self number, because there is not a number n which added to its sum of digits gives 20112210444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6395442 + ... + 6398585.

It is an arithmetic number, because the mean of its divisors is an integer number (1970280312).

Almost surely, 2^20112210444 is an apocalyptic number.

It is an amenable number.

20112210444 is an abundant number, since it is smaller than the sum of its proper divisors (27174517044).

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

20112210444 is a wasteful number, since it uses less digits than its factorization.

20112210444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12794165 (or 12794163 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20112210444 its reverse (44401221102), we get a palindrome (64513431546).

The spelling of 20112210444 in words is "twenty billion, one hundred twelve million, two hundred ten thousand, four hundred forty-four".