1220430220 has 12 divisors (see below), whose sum is σ = 2562903504. Its totient is φ = 488172080.

The previous prime is 1220430199. The next prime is 1220430251. The reversal of 1220430220 is 220340221.

1220430220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1220430194 and 1220430203.

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, 30510736 + ... + 30510775.

It is an arithmetic number, because the mean of its divisors is an integer number (213575292).

Almost surely, 2^1220430220 is an apocalyptic number.

1220430220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220430220 is an abundant number, since it is smaller than the sum of its proper divisors (1342473284).

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

1220430220 is a wasteful number, since it uses less digits than its factorization.

1220430220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61021520 (or 61021518 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1220430220 is about 34934.6564316869. The cubic root of 1220430220 is about 1068.6553172622.

Adding to 1220430220 its reverse (220340221), we get a palindrome (1440770441).

It can be divided in two parts, 12204 and 30220, that added together give a palindrome (42424).

The spelling of 1220430220 in words is "one billion, two hundred twenty million, four hundred thirty thousand, two hundred twenty".