1223213130 has 64 divisors (see below), whose sum is σ = 3266956800. Its totient is φ = 325684800.

The previous prime is 1223213119. The next prime is 1223213137. The reversal of 1223213130 is 313123221.

It is a super-2 number, since 2×1223213130² = 2992500722808793800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1223213137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190980 + ... + 197280.

It is an arithmetic number, because the mean of its divisors is an integer number (51046200).

Almost surely, 2^1223213130 is an apocalyptic number.

1223213130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223213130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1633478400).

1223213130 is an abundant number, since it is smaller than the sum of its proper divisors (2043743670).

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

1223213130 is a wasteful number, since it uses less digits than its factorization.

1223213130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7036 (or 7030 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1223213130 is about 34974.4639701597. The cubic root of 1223213130 is about 1069.4669747400.

Adding to 1223213130 its reverse (313123221), we get a palindrome (1536336351).

The spelling of 1223213130 in words is "one billion, two hundred twenty-three million, two hundred thirteen thousand, one hundred thirty".