10221210210077 has 2 divisors, whose sum is σ = 10221210210078. Its totient is φ = 10221210210076.

The previous prime is 10221210210053. The next prime is 10221210210083. The reversal of 10221210210077 is 77001201212201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5781976121476 + 4439234088601 = 2404574^2 + 2106949^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221210210077 - 2¹² = 10221210205981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221210210047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110605105038 + 5110605105039.

It is an arithmetic number, because the mean of its divisors is an integer number (5110605105039).

Almost surely, 2^{10221210210077} is an apocalyptic number.

It is an amenable number.

10221210210077 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221210210077 is an equidigital number, since it uses as much as digits as its factorization.

10221210210077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 26.

Adding to 10221210210077 its reverse (77001201212201), we get a palindrome (87222411422278).

The spelling of 10221210210077 in words is "ten trillion, two hundred twenty-one billion, two hundred ten million, two hundred ten thousand, seventy-seven".