26132365421221 has 2 divisors, whose sum is σ = 26132365421222. Its totient is φ = 26132365421220.

The previous prime is 26132365421159. The next prime is 26132365421233. The reversal of 26132365421221 is 12212456323162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22602893062500 + 3529472358721 = 4754250^2 + 1878689^2 .

It is a cyclic number.

It is not a de Polignac number, because 26132365421221 - 2⁴¹ = 23933342165669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26132365421291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13066182710610 + 13066182710611.

It is an arithmetic number, because the mean of its divisors is an integer number (13066182710611).

Almost surely, 2^{26132365421221} is an apocalyptic number.

It is an amenable number.

26132365421221 is a deficient number, since it is larger than the sum of its proper divisors (1).

26132365421221 is an equidigital number, since it uses as much as digits as its factorization.

26132365421221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The spelling of 26132365421221 in words is "twenty-six trillion, one hundred thirty-two billion, three hundred sixty-five million, four hundred twenty-one thousand, two hundred twenty-one".