1201141220 has 12 divisors (see below), whose sum is σ = 2522396604. Its totient is φ = 480456480.

The previous prime is 1201141219. The next prime is 1201141229. The reversal of 1201141220 is 221411021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 262699264 + 938441956 = 16208^2 + 30634^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201141195 and 1201141204.

It is not an unprimeable number, because it can be changed into a prime (1201141229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30028511 + ... + 30028550.

It is an arithmetic number, because the mean of its divisors is an integer number (210199717).

Almost surely, 2^1201141220 is an apocalyptic number.

1201141220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201141220 is an abundant number, since it is smaller than the sum of its proper divisors (1321255384).

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

1201141220 is a wasteful number, since it uses less digits than its factorization.

1201141220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60057070 (or 60057068 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1201141220 is about 34657.4843287853. The cubic root of 1201141220 is about 1062.9953311198.

Adding to 1201141220 its reverse (221411021), we get a palindrome (1422552241).

The spelling of 1201141220 in words is "one billion, two hundred one million, one hundred forty-one thousand, two hundred twenty".