102201111120077 has 2 divisors, whose sum is σ = 102201111120078. Its totient is φ = 102201111120076.

The previous prime is 102201111120047. The next prime is 102201111120139. The reversal of 102201111120077 is 770021111102201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97626671345641 + 4574439774436 = 9880621^2 + 2138794^2 .

It is a cyclic number.

It is not a de Polignac number, because 102201111120077 - 2¹⁰ = 102201111119053 is a prime.

It is a super-2 number, since 2×102201111120077² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102201111120047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100555560038 + 51100555560039.

It is an arithmetic number, because the mean of its divisors is an integer number (51100555560039).

Almost surely, 2^{102201111120077} is an apocalyptic number.

It is an amenable number.

102201111120077 is a deficient number, since it is larger than the sum of its proper divisors (1).

102201111120077 is an equidigital number, since it uses as much as digits as its factorization.

102201111120077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 26.

Adding to 102201111120077 its reverse (770021111102201), we get a palindrome (872222222222278).

The spelling of 102201111120077 in words is "one hundred two trillion, two hundred one billion, one hundred eleven million, one hundred twenty thousand, seventy-seven".