121202221739257 has 2 divisors, whose sum is σ = 121202221739258. Its totient is φ = 121202221739256.

The previous prime is 121202221739243. The next prime is 121202221739279. The reversal of 121202221739257 is 752937122202121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101663178489856 + 19539043249401 = 10082816^2 + 4420299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121202221739257 is a prime.

It is a super-3 number, since 3×121202221739257³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (121202221736257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601110869628 + 60601110869629.

It is an arithmetic number, because the mean of its divisors is an integer number (60601110869629).

Almost surely, 2^{121202221739257} is an apocalyptic number.

It is an amenable number.

121202221739257 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202221739257 is an equidigital number, since it uses as much as digits as its factorization.

121202221739257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 121202221739257 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred twenty-one million, seven hundred thirty-nine thousand, two hundred fifty-seven".