1230001220 has 48 divisors (see below), whose sum is σ = 2954544768. Its totient is φ = 421351680.

The previous prime is 1230001219. The next prime is 1230001237. The reversal of 1230001220 is 221000321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197555 + ... + 203685.

It is an arithmetic number, because the mean of its divisors is an integer number (61553016).

Almost surely, 2^1230001220 is an apocalyptic number.

1230001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230001220 is an abundant number, since it is smaller than the sum of its proper divisors (1724543548).

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

1230001220 is a wasteful number, since it uses less digits than its factorization.

1230001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580 (or 7578 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1230001220 is about 35071.3732266075. The cubic root of 1230001220 is about 1071.4416239341.

Adding to 1230001220 its reverse (221000321), we get a palindrome (1451001541).

The spelling of 1230001220 in words is "one billion, two hundred thirty million, one thousand, two hundred twenty".