254331201120121 has 2 divisors, whose sum is σ = 254331201120122. Its totient is φ = 254331201120120.

The previous prime is 254331201120119. The next prime is 254331201120221. The reversal of 254331201120121 is 121021102133452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236544738360121 + 17786462760000 = 15380011^2 + 4217400^2 .

It is a cyclic number.

It is not a de Polignac number, because 254331201120121 - 2¹ = 254331201120119 is a prime.

Together with 254331201120119, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 254331201120121.

It is not a weakly prime, because it can be changed into another prime (254331201120221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127165600560060 + 127165600560061.

It is an arithmetic number, because the mean of its divisors is an integer number (127165600560061).

Almost surely, 2^{254331201120121} is an apocalyptic number.

It is an amenable number.

254331201120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

254331201120121 is an equidigital number, since it uses as much as digits as its factorization.

254331201120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 254331201120121 its reverse (121021102133452), we get a palindrome (375352303253573).

The spelling of 254331201120121 in words is "two hundred fifty-four trillion, three hundred thirty-one billion, two hundred one million, one hundred twenty thousand, one hundred twenty-one".