12215720057422 has 16 divisors (see below), whose sum is σ = 21663345915360. Its totient is φ = 5054780713248.

The previous prime is 12215720057417. The next prime is 12215720057491. The reversal of 12215720057422 is 22475002751221.

12215720057422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 15043989813 + ... + 15043990624.

It is an arithmetic number, because the mean of its divisors is an integer number (1353959119710).

Almost surely, 2^{12215720057422} is an apocalyptic number.

12215720057422 is a deficient number, since it is larger than the sum of its proper divisors (9447625857938).

12215720057422 is a wasteful number, since it uses less digits than its factorization.

12215720057422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30087980475.

The product of its (nonzero) digits is 156800, while the sum is 40.

The spelling of 12215720057422 in words is "twelve trillion, two hundred fifteen billion, seven hundred twenty million, fifty-seven thousand, four hundred twenty-two".