21032112236477 has 2 divisors, whose sum is σ = 21032112236478. Its totient is φ = 21032112236476.

The previous prime is 21032112236441. The next prime is 21032112236519. The reversal of 21032112236477 is 77463221123012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11804041361401 + 9228070875076 = 3435701^2 + 3037774^2 .

It is a cyclic number.

It is not a de Polignac number, because 21032112236477 - 2⁸ = 21032112236221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21032112236437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516056118238 + 10516056118239.

It is an arithmetic number, because the mean of its divisors is an integer number (10516056118239).

Almost surely, 2^{21032112236477} is an apocalyptic number.

It is an amenable number.

21032112236477 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032112236477 is an equidigital number, since it uses as much as digits as its factorization.

21032112236477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 41.

Adding to 21032112236477 its reverse (77463221123012), we get a palindrome (98495333359489).

The spelling of 21032112236477 in words is "twenty-one trillion, thirty-two billion, one hundred twelve million, two hundred thirty-six thousand, four hundred seventy-seven".