123021033049 has 2 divisors, whose sum is σ = 123021033050. Its totient is φ = 123021033048.

The previous prime is 123021033011. The next prime is 123021033061. The reversal of 123021033049 is 940330120321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102505627225 + 20515405824 = 320165^2 + 143232^2 .

It is an emirp because it is prime and its reverse (940330120321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123021033049 - 2¹³ = 123021024857 is a prime.

It is not a weakly prime, because it can be changed into another prime (123021033349) 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, 61510516524 + 61510516525.

It is an arithmetic number, because the mean of its divisors is an integer number (61510516525).

Almost surely, 2^123021033049 is an apocalyptic number.

It is an amenable number.

123021033049 is a deficient number, since it is larger than the sum of its proper divisors (1).

123021033049 is an equidigital number, since it uses as much as digits as its factorization.

123021033049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 123021033049 in words is "one hundred twenty-three billion, twenty-one million, thirty-three thousand, forty-nine".