201130121220 has 96 divisors (see below), whose sum is σ = 652433150208. Its totient is φ = 45342830592.

The previous prime is 201130121099. The next prime is 201130121249. The reversal of 201130121220 is 22121031102.

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 201130121220.

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, 3249349 + ... + 3310668.

It is an arithmetic number, because the mean of its divisors is an integer number (6796178648).

Almost surely, 2^201130121220 is an apocalyptic number.

201130121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201130121220 is an abundant number, since it is smaller than the sum of its proper divisors (451303028988).

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

201130121220 is a wasteful number, since it uses less digits than its factorization.

201130121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6560109 (or 6560107 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201130121220 its reverse (22121031102), we get a palindrome (223251152322).

The spelling of 201130121220 in words is "two hundred one billion, one hundred thirty million, one hundred twenty-one thousand, two hundred twenty".