1203031100220 has 96 divisors (see below), whose sum is σ = 3460562699328. Its totient is φ = 312044378112.

The previous prime is 1203031100209. The next prime is 1203031100273. The reversal of 1203031100220 is 220011303021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1203031100220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7497472 + ... + 7656248.

It is an arithmetic number, because the mean of its divisors is an integer number (36047528118).

Almost surely, 2^{1203031100220} is an apocalyptic number.

1203031100220 is a gapful number since it is divisible by the number (10) 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 1203031100220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1730281349664).

1203031100220 is an abundant number, since it is smaller than the sum of its proper divisors (2257531599108).

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

1203031100220 is a wasteful number, since it uses less digits than its factorization.

1203031100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162239 (or 162237 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1203031100220 its reverse (220011303021), we get a palindrome (1423042403241).

The spelling of 1203031100220 in words is "one trillion, two hundred three billion, thirty-one million, one hundred thousand, two hundred twenty".