12221775415857 has 8 divisors (see below), whose sum is σ = 18623657776576. Its totient is φ = 6983871666192.

The previous prime is 12221775415813. The next prime is 12221775415867. The reversal of 12221775415857 is 75851457712221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12221775415857 - 2²² = 12221771221553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221775415797 and 12221775415806.

It is not an unprimeable number, because it can be changed into a prime (12221775415867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290994652738 + ... + 290994652779.

It is an arithmetic number, because the mean of its divisors is an integer number (2327957222072).

Almost surely, 2^{12221775415857} is an apocalyptic number.

It is an amenable number.

12221775415857 is a deficient number, since it is larger than the sum of its proper divisors (6401882360719).

12221775415857 is an equidigital number, since it uses as much as digits as its factorization.

12221775415857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581989305527.

The product of its digits is 10976000, while the sum is 57.

The spelling of 12221775415857 in words is "twelve trillion, two hundred twenty-one billion, seven hundred seventy-five million, four hundred fifteen thousand, eight hundred fifty-seven".