12215643342 has 16 divisors (see below), whose sum is σ = 27921470592. Its totient is φ = 3490183800.

The previous prime is 12215643331. The next prime is 12215643353. The reversal of 12215643342 is 24334651221.

It is an interprime number because it is at equal distance from previous prime (12215643331) and next prime (12215643353).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145424284 + ... + 145424367.

It is an arithmetic number, because the mean of its divisors is an integer number (1745091912).

Almost surely, 2^12215643342 is an apocalyptic number.

12215643342 is an abundant number, since it is smaller than the sum of its proper divisors (15705827250).

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

12215643342 is a wasteful number, since it uses less digits than its factorization.

12215643342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290848663.

The product of its digits is 34560, while the sum is 33.

The spelling of 12215643342 in words is "twelve billion, two hundred fifteen million, six hundred forty-three thousand, three hundred forty-two".