12221001194827 has 2 divisors, whose sum is σ = 12221001194828. Its totient is φ = 12221001194826.

The previous prime is 12221001194777. The next prime is 12221001194849. The reversal of 12221001194827 is 72849110012221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12221001194827 - 2²³ = 12220992806219 is a prime.

It is a super-2 number, since 2×12221001194827² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12221001194827.

It is not a weakly prime, because it can be changed into another prime (12221001194327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110500597413 + 6110500597414.

It is an arithmetic number, because the mean of its divisors is an integer number (6110500597414).

Almost surely, 2^{12221001194827} is an apocalyptic number.

12221001194827 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221001194827 is an equidigital number, since it uses as much as digits as its factorization.

12221001194827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 40.

The spelling of 12221001194827 in words is "twelve trillion, two hundred twenty-one billion, one million, one hundred ninety-four thousand, eight hundred twenty-seven".