122921266649 has 2 divisors, whose sum is σ = 122921266650. Its totient is φ = 122921266648.

The previous prime is 122921266613. The next prime is 122921266703. The reversal of 122921266649 is 946662129221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85903506649 + 37017760000 = 293093^2 + 192400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122921266649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122921266597 and 122921266606.

It is not a weakly prime, because it can be changed into another prime (122921266609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61460633324 + 61460633325.

It is an arithmetic number, because the mean of its divisors is an integer number (61460633325).

Almost surely, 2^122921266649 is an apocalyptic number.

It is an amenable number.

122921266649 is a deficient number, since it is larger than the sum of its proper divisors (1).

122921266649 is an equidigital number, since it uses as much as digits as its factorization.

122921266649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 50.

The spelling of 122921266649 in words is "one hundred twenty-two billion, nine hundred twenty-one million, two hundred sixty-six thousand, six hundred forty-nine".