1201018220 has 12 divisors (see below), whose sum is σ = 2522138304. Its totient is φ = 480407280.

The previous prime is 1201018157. The next prime is 1201018249. The reversal of 1201018220 is 228101021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30025436 + ... + 30025475.

It is an arithmetic number, because the mean of its divisors is an integer number (210178192).

Almost surely, 2^1201018220 is an apocalyptic number.

1201018220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201018220 is an abundant number, since it is smaller than the sum of its proper divisors (1321120084).

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

1201018220 is a wasteful number, since it uses less digits than its factorization.

1201018220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60050920 (or 60050918 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1201018220 is about 34655.7097748697. The cubic root of 1201018220 is about 1062.9590453813.

Adding to 1201018220 its reverse (228101021), we get a palindrome (1429119241).

The spelling of 1201018220 in words is "one billion, two hundred one million, eighteen thousand, two hundred twenty".