13100322220421 has 2 divisors, whose sum is σ = 13100322220422. Its totient is φ = 13100322220420.

The previous prime is 13100322220393. The next prime is 13100322220451. The reversal of 13100322220421 is 12402222300131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11372333099521 + 1727989120900 = 3372289^2 + 1314530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13100322220421 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13100322220451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6550161110210 + 6550161110211.

It is an arithmetic number, because the mean of its divisors is an integer number (6550161110211).

Almost surely, 2^{13100322220421} is an apocalyptic number.

It is an amenable number.

13100322220421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13100322220421 is an equidigital number, since it uses as much as digits as its factorization.

13100322220421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 13100322220421 its reverse (12402222300131), we get a palindrome (25502544520552).

The spelling of 13100322220421 in words is "thirteen trillion, one hundred billion, three hundred twenty-two million, two hundred twenty thousand, four hundred twenty-one".