1220120221203 has 96 divisors (see below), whose sum is σ = 1974256607232. Its totient is φ = 721049817600.

The previous prime is 1220120221181. The next prime is 1220120221219. The reversal of 1220120221203 is 3021220210221.

1220120221203 is a `hidden beast` number, since 1 + 220 + 1 + 20 + 221 + 203 = 666.

It is not a de Polignac number, because 1220120221203 - 2⁶ = 1220120221139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220120221283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 460943226 + ... + 460945872.

It is an arithmetic number, because the mean of its divisors is an integer number (20565172992).

Almost surely, 2^{1220120221203} is an apocalyptic number.

1220120221203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1220120221203 is a deficient number, since it is larger than the sum of its proper divisors (754136386029).

1220120221203 is a wasteful number, since it uses less digits than its factorization.

1220120221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625 (or 3622 counting only the distinct ones).

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

Adding to 1220120221203 its reverse (3021220210221), we get a palindrome (4241340431424).

The spelling of 1220120221203 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred twenty-one thousand, two hundred three".