121020222210257 has 2 divisors, whose sum is σ = 121020222210258. Its totient is φ = 121020222210256.

The previous prime is 121020222210179. The next prime is 121020222210301. The reversal of 121020222210257 is 752012222020121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120690635993041 + 329586217216 = 10985929^2 + 574096^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020222210257 - 2¹⁰ = 121020222209233 is a prime.

It is not a weakly prime, because it can be changed into another prime (121020222213257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510111105128 + 60510111105129.

It is an arithmetic number, because the mean of its divisors is an integer number (60510111105129).

Almost surely, 2^{121020222210257} is an apocalyptic number.

It is an amenable number.

121020222210257 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020222210257 is an equidigital number, since it uses as much as digits as its factorization.

121020222210257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

Adding to 121020222210257 its reverse (752012222020121), we get a palindrome (873032444230378).

The spelling of 121020222210257 in words is "one hundred twenty-one trillion, twenty billion, two hundred twenty-two million, two hundred ten thousand, two hundred fifty-seven".