21322100211277 has 2 divisors, whose sum is σ = 21322100211278. Its totient is φ = 21322100211276.

The previous prime is 21322100211241. The next prime is 21322100211337. The reversal of 21322100211277 is 77211200122312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21111718373001 + 210381838276 = 4594749^2 + 458674^2 .

It is a cyclic number.

It is not a de Polignac number, because 21322100211277 - 2⁷ = 21322100211149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21322100211977) 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, 10661050105638 + 10661050105639.

It is an arithmetic number, because the mean of its divisors is an integer number (10661050105639).

Almost surely, 2^{21322100211277} is an apocalyptic number.

It is an amenable number.

21322100211277 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322100211277 is an equidigital number, since it uses as much as digits as its factorization.

21322100211277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

Adding to 21322100211277 its reverse (77211200122312), we get a palindrome (98533300333589).

The spelling of 21322100211277 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred million, two hundred eleven thousand, two hundred seventy-seven".