102112101121 has 2 divisors, whose sum is σ = 102112101122. Its totient is φ = 102112101120.

The previous prime is 102112101089. The next prime is 102112101139. The reversal of 102112101121 is 121101211201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73137252721 + 28974848400 = 270439^2 + 170220^2 .

It is an emirp because it is prime and its reverse (121101211201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102112101121 - 2⁵ = 102112101089 is a prime.

It is not a weakly prime, because it can be changed into another prime (102112101191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51056050560 + 51056050561.

It is an arithmetic number, because the mean of its divisors is an integer number (51056050561).

Almost surely, 2^102112101121 is an apocalyptic number.

It is an amenable number.

102112101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102112101121 is an equidigital number, since it uses as much as digits as its factorization.

102112101121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102112101121 its reverse (121101211201), we get a palindrome (223213312322).

The spelling of 102112101121 in words is "one hundred two billion, one hundred twelve million, one hundred one thousand, one hundred twenty-one".