123010021273 has 2 divisors, whose sum is σ = 123010021274. Its totient is φ = 123010021272.

The previous prime is 123010021249. The next prime is 123010021333. The reversal of 123010021273 is 372120010321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121949020944 + 1061000329 = 349212^2 + 32573^2 .

It is a cyclic number.

It is not a de Polignac number, because 123010021273 - 2²¹ = 123007924121 is a prime.

It is not a weakly prime, because it can be changed into another prime (123010021073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61505010636 + 61505010637.

It is an arithmetic number, because the mean of its divisors is an integer number (61505010637).

Almost surely, 2^123010021273 is an apocalyptic number.

It is an amenable number.

123010021273 is a deficient number, since it is larger than the sum of its proper divisors (1).

123010021273 is an equidigital number, since it uses as much as digits as its factorization.

123010021273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 123010021273 its reverse (372120010321), we get a palindrome (495130031594).

The spelling of 123010021273 in words is "one hundred twenty-three billion, ten million, twenty-one thousand, two hundred seventy-three".