121011021317 has 2 divisors, whose sum is σ = 121011021318. Its totient is φ = 121011021316.

The previous prime is 121011021247. The next prime is 121011021367. The reversal of 121011021317 is 713120110121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120927280516 + 83740801 = 347746^2 + 9151^2 .

It is an emirp because it is prime and its reverse (713120110121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121011021317 - 2¹⁶ = 121010955781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121011021367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505510658 + 60505510659.

It is an arithmetic number, because the mean of its divisors is an integer number (60505510659).

Almost surely, 2^121011021317 is an apocalyptic number.

It is an amenable number.

121011021317 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011021317 is an equidigital number, since it uses as much as digits as its factorization.

121011021317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 121011021317 its reverse (713120110121), we get a palindrome (834131131438).

The spelling of 121011021317 in words is "one hundred twenty-one billion, eleven million, twenty-one thousand, three hundred seventeen".