20011103244 has 48 divisors (see below), whose sum is σ = 56597063040. Its totient is φ = 6063970320.

The previous prime is 20011103243. The next prime is 20011103263. The reversal of 20011103244 is 44230111002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20011103243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8420994 + ... + 8423369.

It is an arithmetic number, because the mean of its divisors is an integer number (1179105480).

Almost surely, 2^20011103244 is an apocalyptic number.

It is an amenable number.

20011103244 is an abundant number, since it is smaller than the sum of its proper divisors (36585959796).

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

20011103244 is a wasteful number, since it uses less digits than its factorization.

20011103244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16844387 (or 16844379 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20011103244 its reverse (44230111002), we get a palindrome (64241214246).

The spelling of 20011103244 in words is "twenty billion, eleven million, one hundred three thousand, two hundred forty-four".