12221111622413 has 2 divisors, whose sum is σ = 12221111622414. Its totient is φ = 12221111622412.

The previous prime is 12221111622373. The next prime is 12221111622457. The reversal of 12221111622413 is 31422611112221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6299763664489 + 5921347957924 = 2509933^2 + 2433382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221111622413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221111625413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110555811206 + 6110555811207.

It is an arithmetic number, because the mean of its divisors is an integer number (6110555811207).

Almost surely, 2^{12221111622413} is an apocalyptic number.

It is an amenable number.

12221111622413 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221111622413 is an equidigital number, since it uses as much as digits as its factorization.

12221111622413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 29.

Adding to 12221111622413 its reverse (31422611112221), we get a palindrome (43643722734634).

The spelling of 12221111622413 in words is "twelve trillion, two hundred twenty-one billion, one hundred eleven million, six hundred twenty-two thousand, four hundred thirteen".