20120200044 has 96 divisors (see below), whose sum is σ = 54604333056. Its totient is φ = 5647682880.

The previous prime is 20120200039. The next prime is 20120200049. The reversal of 20120200044 is 44000202102.

It is an interprime number because it is at equal distance from previous prime (20120200039) and next prime (20120200049).

It is a junction number, because it is equal to n+sod(n) for n = 20120199996 and 20120200032.

It is not an unprimeable number, because it can be changed into a prime (20120200049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1089649 + ... + 1107959.

It is an arithmetic number, because the mean of its divisors is an integer number (568795136).

Almost surely, 2^20120200044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20120200044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27302166528).

20120200044 is an abundant number, since it is smaller than the sum of its proper divisors (34484133012).

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

20120200044 is a wasteful number, since it uses less digits than its factorization.

20120200044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18555 (or 18553 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20120200044 its reverse (44000202102), we get a palindrome (64120402146).

The spelling of 20120200044 in words is "twenty billion, one hundred twenty million, two hundred thousand, forty-four".