201103031220 has 192 divisors, whose sum is σ = 711763293696. Its totient is φ = 41283717120.

The previous prime is 201103031209. The next prime is 201103031231. The reversal of 201103031220 is 22130301102.

201103031220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201103031209) and next prime (201103031231).

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 201103031220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 295711 + ... + 699750.

It is an arithmetic number, because the mean of its divisors is an integer number (3707100488).

Almost surely, 2^201103031220 is an apocalyptic number.

201103031220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201103031220 is an abundant number, since it is smaller than the sum of its proper divisors (510660262476).

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

201103031220 is a wasteful number, since it uses less digits than its factorization.

201103031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995530 (or 995528 counting only the distinct ones).

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

Adding to 201103031220 its reverse (22130301102), we get a palindrome (223233332322).

The spelling of 201103031220 in words is "two hundred one billion, one hundred three million, thirty-one thousand, two hundred twenty".