12215112530 has 16 divisors (see below), whose sum is σ = 22013804160. Its totient is φ = 4880133552.

The previous prime is 12215112523. The next prime is 12215112563. The reversal of 12215112530 is 3521151221.

It is a junction number, because it is equal to n+sod(n) for n = 12215112496 and 12215112505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730250 + ... + 746789.

It is an arithmetic number, because the mean of its divisors is an integer number (1375862760).

Almost surely, 2^12215112530 is an apocalyptic number.

12215112530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12215112530 is a deficient number, since it is larger than the sum of its proper divisors (9798691630).

12215112530 is a wasteful number, since it uses less digits than its factorization.

12215112530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477873.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 12215112530 its reverse (3521151221), we get a palindrome (15736263751).

The spelling of 12215112530 in words is "twelve billion, two hundred fifteen million, one hundred twelve thousand, five hundred thirty".