11881882130221 has 2 divisors, whose sum is σ = 11881882130222. Its totient is φ = 11881882130220.

The previous prime is 11881882130213. The next prime is 11881882130227. The reversal of 11881882130221 is 12203128818811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10205533052100 + 1676349078121 = 3194610^2 + 1294739^2 .

It is a cyclic number.

It is not a de Polignac number, because 11881882130221 - 2³ = 11881882130213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11881882130227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5940941065110 + 5940941065111.

It is an arithmetic number, because the mean of its divisors is an integer number (5940941065111).

Almost surely, 2^{11881882130221} is an apocalyptic number.

It is an amenable number.

11881882130221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11881882130221 is an equidigital number, since it uses as much as digits as its factorization.

11881882130221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98304, while the sum is 46.

The spelling of 11881882130221 in words is "eleven trillion, eight hundred eighty-one billion, eight hundred eighty-two million, one hundred thirty thousand, two hundred twenty-one".