121013100178253 has 2 divisors, whose sum is σ = 121013100178254. Its totient is φ = 121013100178252.

The previous prime is 121013100178237. The next prime is 121013100178259. The reversal of 121013100178253 is 352871001310121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116222263493449 + 4790836684804 = 10780643^2 + 2188798^2 .

It is a cyclic number.

It is not a de Polignac number, because 121013100178253 - 2⁴ = 121013100178237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121013100178259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506550089126 + 60506550089127.

It is an arithmetic number, because the mean of its divisors is an integer number (60506550089127).

Almost surely, 2^{121013100178253} is an apocalyptic number.

It is an amenable number.

121013100178253 is a deficient number, since it is larger than the sum of its proper divisors (1).

121013100178253 is an equidigital number, since it uses as much as digits as its factorization.

121013100178253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

Adding to 121013100178253 its reverse (352871001310121), we get a palindrome (473884101488374).

The spelling of 121013100178253 in words is "one hundred twenty-one trillion, thirteen billion, one hundred million, one hundred seventy-eight thousand, two hundred fifty-three".