21476522223361 has 2 divisors, whose sum is σ = 21476522223362. Its totient is φ = 21476522223360.

The previous prime is 21476522223283. The next prime is 21476522223433. The reversal of 21476522223361 is 16332222567412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13515321389761 + 7961200833600 = 3676319^2 + 2821560^2 .

It is a cyclic number.

It is not a de Polignac number, because 21476522223361 - 2²⁹ = 21475985352449 is a prime.

It is a super-2 number, since 2×21476522223361² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21476522224361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10738261111680 + 10738261111681.

It is an arithmetic number, because the mean of its divisors is an integer number (10738261111681).

Almost surely, 2^{21476522223361} is an apocalyptic number.

It is an amenable number.

21476522223361 is a deficient number, since it is larger than the sum of its proper divisors (1).

21476522223361 is an equidigital number, since it uses as much as digits as its factorization.

21476522223361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 46.

The spelling of 21476522223361 in words is "twenty-one trillion, four hundred seventy-six billion, five hundred twenty-two million, two hundred twenty-three thousand, three hundred sixty-one".