121231302222361 has 2 divisors, whose sum is σ = 121231302222362. Its totient is φ = 121231302222360.

The previous prime is 121231302222319. The next prime is 121231302222377. The reversal of 121231302222361 is 163222203132121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109664229140761 + 11567073081600 = 10472069^2 + 3401040^2 .

It is a cyclic number.

It is not a de Polignac number, because 121231302222361 - 2²⁷ = 121231168004633 is a prime.

It is a super-2 number, since 2×121231302222361² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121231302222311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615651111180 + 60615651111181.

It is an arithmetic number, because the mean of its divisors is an integer number (60615651111181).

Almost surely, 2^{121231302222361} is an apocalyptic number.

It is an amenable number.

121231302222361 is a deficient number, since it is larger than the sum of its proper divisors (1).

121231302222361 is an equidigital number, since it uses as much as digits as its factorization.

121231302222361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 121231302222361 its reverse (163222203132121), we get a palindrome (284453505354482).

The spelling of 121231302222361 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, three hundred two million, two hundred twenty-two thousand, three hundred sixty-one".