12263644636221 has 64 divisors (see below), whose sum is σ = 18517255485696. Its totient is φ = 7153945344000.

The previous prime is 12263644636213. The next prime is 12263644636231.

12263644636221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12263644636221 - 2³ = 12263644636213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12263644636231) 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 63 ways as a sum of consecutive naturals, for example, 147080275 + ... + 147163631.

It is an arithmetic number, because the mean of its divisors is an integer number (289332116964).

Almost surely, 2^{12263644636221} is an apocalyptic number.

12263644636221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12263644636221 is a deficient number, since it is larger than the sum of its proper divisors (6253610849475).

12263644636221 is a wasteful number, since it uses less digits than its factorization.

12263644636221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84702.

The product of its digits is 2985984, while the sum is 48.

The spelling of 12263644636221 in words is "twelve trillion, two hundred sixty-three billion, six hundred forty-four million, six hundred thirty-six thousand, two hundred twenty-one".