121230101173 has 2 divisors, whose sum is σ = 121230101174. Its totient is φ = 121230101172.

The previous prime is 121230101171. The next prime is 121230101219. The reversal of 121230101173 is 371101032121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84839960529 + 36390140644 = 291273^2 + 190762^2 .

It is an emirp because it is prime and its reverse (371101032121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121230101173 - 2¹ = 121230101171 is a prime.

Together with 121230101171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121230101171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615050586 + 60615050587.

It is an arithmetic number, because the mean of its divisors is an integer number (60615050587).

Almost surely, 2^121230101173 is an apocalyptic number.

It is an amenable number.

121230101173 is a deficient number, since it is larger than the sum of its proper divisors (1).

121230101173 is an equidigital number, since it uses as much as digits as its factorization.

121230101173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

Adding to 121230101173 its reverse (371101032121), we get a palindrome (492331133294).

The spelling of 121230101173 in words is "one hundred twenty-one billion, two hundred thirty million, one hundred one thousand, one hundred seventy-three".