1220511230 has 64 divisors (see below), whose sum is σ = 2355236352. Its totient is φ = 454533120.

The previous prime is 1220511223. The next prime is 1220511233. The reversal of 1220511230 is 321150221.

It is a happy number.

It is a super-2 number, since 2×1220511230² = 2979295325112225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220511199 and 1220511208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220511233) 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 31 ways as a sum of consecutive naturals, for example, 1112042 + ... + 1113138.

It is an arithmetic number, because the mean of its divisors is an integer number (36800568).

Almost surely, 2^1220511230 is an apocalyptic number.

1220511230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220511230 is a deficient number, since it is larger than the sum of its proper divisors (1134725122).

1220511230 is a wasteful number, since it uses less digits than its factorization.

1220511230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1220511230 is about 34935.8158628076. The cubic root of 1220511230 is about 1068.6789618891.

Adding to 1220511230 its reverse (321150221), we get a palindrome (1541661451).

The spelling of 1220511230 in words is "one billion, two hundred twenty million, five hundred eleven thousand, two hundred thirty".