12215720057069 has 16 divisors (see below), whose sum is σ = 12705088561920. Its totient is φ = 11734740838080.

The previous prime is 12215720057059. The next prime is 12215720057159. The reversal of 12215720057069 is 96075002751221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12215720057069 is a prime.

It is a super-2 number, since 2×12215720057069² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215720057059) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 147169559 + ... + 147252539.

It is an arithmetic number, because the mean of its divisors is an integer number (794068035120).

Almost surely, 2^{12215720057069} is an apocalyptic number.

It is an amenable number.

12215720057069 is a deficient number, since it is larger than the sum of its proper divisors (489368504851).

12215720057069 is an equidigital number, since it uses as much as digits as its factorization.

12215720057069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133460.

The product of its (nonzero) digits is 529200, while the sum is 47.

The spelling of 12215720057069 in words is "twelve trillion, two hundred fifteen billion, seven hundred twenty million, fifty-seven thousand, sixty-nine".