12221341530 has 32 divisors (see below), whose sum is σ = 30342643200. Its totient is φ = 3146644032.

The previous prime is 12221341523. The next prime is 12221341537. The reversal of 12221341530 is 3514312221.

It is an interprime number because it is at equal distance from previous prime (12221341523) and next prime (12221341537).

It is a super-2 number, since 2×12221341530² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12221341530.

It is not an unprimeable number, because it can be changed into a prime (12221341537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7022890 + ... + 7024629.

It is an arithmetic number, because the mean of its divisors is an integer number (948207600).

Almost surely, 2^12221341530 is an apocalyptic number.

12221341530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221341530 is an abundant number, since it is smaller than the sum of its proper divisors (18121301670).

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

12221341530 is a wasteful number, since it uses less digits than its factorization.

12221341530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14047558.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 12221341530 its reverse (3514312221), we get a palindrome (15735653751).

The spelling of 12221341530 in words is "twelve billion, two hundred twenty-one million, three hundred forty-one thousand, five hundred thirty".