1101221102077 has 2 divisors, whose sum is σ = 1101221102078. Its totient is φ = 1101221102076.

The previous prime is 1101221102063. The next prime is 1101221102143. The reversal of 1101221102077 is 7702011221011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 870724131876 + 230496970201 = 933126^2 + 480101^2 .

It is an emirp because it is prime and its reverse (7702011221011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1101221102077 - 2⁷ = 1101221101949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101221102477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610551038 + 550610551039.

It is an arithmetic number, because the mean of its divisors is an integer number (550610551039).

Almost surely, 2^{1101221102077} is an apocalyptic number.

It is an amenable number.

1101221102077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101221102077 is an equidigital number, since it uses as much as digits as its factorization.

1101221102077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 25.

Adding to 1101221102077 its reverse (7702011221011), we get a palindrome (8803232323088).

The spelling of 1101221102077 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred two thousand, seventy-seven".