1102020120077 has 2 divisors, whose sum is σ = 1102020120078. Its totient is φ = 1102020120076.

The previous prime is 1102020120073. The next prime is 1102020120083. The reversal of 1102020120077 is 7700210202011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1101721037641 + 299082436 = 1049629^2 + 17294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102020120077 - 2² = 1102020120073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102020120073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551010060038 + 551010060039.

It is an arithmetic number, because the mean of its divisors is an integer number (551010060039).

Almost surely, 2^{1102020120077} is an apocalyptic number.

It is an amenable number.

1102020120077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102020120077 is an equidigital number, since it uses as much as digits as its factorization.

1102020120077 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 23.

Adding to 1102020120077 its reverse (7700210202011), we get a palindrome (8802230322088).

The spelling of 1102020120077 in words is "one trillion, one hundred two billion, twenty million, one hundred twenty thousand, seventy-seven".