1220211230 has 24 divisors (see below), whose sum is σ = 2554973928. Its totient is φ = 418357968.

The previous prime is 1220211229. The next prime is 1220211241. The reversal of 1220211230 is 321120221.

It is a happy number.

It is a super-2 number, since 2×1220211230² = 2977830891636225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1244624 + ... + 1245603.

It is an arithmetic number, because the mean of its divisors is an integer number (106457247).

Almost surely, 2^1220211230 is an apocalyptic number.

1220211230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220211230 is an abundant number, since it is smaller than the sum of its proper divisors (1334762698).

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

1220211230 is a wasteful number, since it uses less digits than its factorization.

1220211230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490248 (or 2490241 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1220211230 is about 34931.5220109288. The cubic root of 1220211230 is about 1068.5913947691.

Adding to 1220211230 its reverse (321120221), we get a palindrome (1541331451).

It can be divided in two parts, 12202 and 11230, that added together give a palindrome (23432).

The spelling of 1220211230 in words is "one billion, two hundred twenty million, two hundred eleven thousand, two hundred thirty".