12229861215 has 32 divisors (see below), whose sum is σ = 22988722176. Its totient is φ = 5473503360.

The previous prime is 12229861187. The next prime is 12229861223. The reversal of 12229861215 is 51216892221.

It is not a de Polignac number, because 12229861215 - 2⁸ = 12229860959 is a prime.

It is a super-2 number, since 2×12229861215² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2848639 + ... + 2852928.

It is an arithmetic number, because the mean of its divisors is an integer number (718397568).

Almost surely, 2^12229861215 is an apocalyptic number.

12229861215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12229861215 is a deficient number, since it is larger than the sum of its proper divisors (10758860961).

12229861215 is a wasteful number, since it uses less digits than its factorization.

12229861215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5701599.

The product of its digits is 34560, while the sum is 39.

The spelling of 12229861215 in words is "twelve billion, two hundred twenty-nine million, eight hundred sixty-one thousand, two hundred fifteen".