12215720057070 has 128 divisors (see below), whose sum is σ = 30020871877632. Its totient is φ = 3180318848000.

The previous prime is 12215720057059. The next prime is 12215720057159. The reversal of 12215720057070 is 7075002751221.

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 63 ways as a sum of consecutive naturals, for example, 632896420 + ... + 632915720.

It is an arithmetic number, because the mean of its divisors is an integer number (234538061544).

Almost surely, 2^{12215720057070} is an apocalyptic number.

12215720057070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12215720057070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15010435938816).

12215720057070 is an abundant number, since it is smaller than the sum of its proper divisors (17805151820562).

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

12215720057070 is a wasteful number, since it uses less digits than its factorization.

12215720057070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22266.

The product of its (nonzero) digits is 68600, while the sum is 39.

The spelling of 12215720057070 in words is "twelve trillion, two hundred fifteen billion, seven hundred twenty million, fifty-seven thousand, seventy".