20103021120 has 224 divisors, whose sum is σ = 78556762368. Its totient is φ = 4241498112.

The previous prime is 20103021061. The next prime is 20103021121. The reversal of 20103021120 is 2112030102.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20103021096 and 20103021105.

It is not an unprimeable number, because it can be changed into a prime (20103021121) 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, 27699 + ... + 202418.

It is an arithmetic number, because the mean of its divisors is an integer number (350699832).

Almost surely, 2^20103021120 is an apocalyptic number.

20103021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20103021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39278381184).

20103021120 is an abundant number, since it is smaller than the sum of its proper divisors (58453741248).

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

20103021120 is a wasteful number, since it uses less digits than its factorization.

20103021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230157 (or 230147 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20103021120 its reverse (2112030102), we get a palindrome (22215051222).

The spelling of 20103021120 in words is "twenty billion, one hundred three million, twenty-one thousand, one hundred twenty".