102111315077 has 4 divisors (see below), whose sum is σ = 102166185996. Its totient is φ = 102056444160.

The previous prime is 102111315049. The next prime is 102111315143. The reversal of 102111315077 is 770513111201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 770513111201 = 47 ⋅16393895983.

It can be written as a sum of positive squares in 2 ways, for example, as 27662009761 + 74449305316 = 166319^2 + 272854^2 .

It is a cyclic number.

It is not a de Polignac number, because 102111315077 - 2²⁴ = 102094537861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111315377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27432668 + ... + 27436389.

It is an arithmetic number, because the mean of its divisors is an integer number (25541546499).

Almost surely, 2^102111315077 is an apocalyptic number.

It is an amenable number.

102111315077 is a deficient number, since it is larger than the sum of its proper divisors (54870919).

102111315077 is an equidigital number, since it uses as much as digits as its factorization.

102111315077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54870918.

The product of its (nonzero) digits is 1470, while the sum is 29.

Adding to 102111315077 its reverse (770513111201), we get a palindrome (872624426278).

The spelling of 102111315077 in words is "one hundred two billion, one hundred eleven million, three hundred fifteen thousand, seventy-seven".