123210123221249 has 2 divisors, whose sum is σ = 123210123221250. Its totient is φ = 123210123221248.

The previous prime is 123210123221161. The next prime is 123210123221281. The reversal of 123210123221249 is 942122321012321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115459645396225 + 7750477825024 = 10745215^2 + 2783968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123210123221249 is a prime.

It is not a weakly prime, because it can be changed into another prime (123210173221249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61605061610624 + 61605061610625.

It is an arithmetic number, because the mean of its divisors is an integer number (61605061610625).

Almost surely, 2^{123210123221249} is an apocalyptic number.

It is an amenable number.

123210123221249 is a deficient number, since it is larger than the sum of its proper divisors (1).

123210123221249 is an equidigital number, since it uses as much as digits as its factorization.

123210123221249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 123210123221249 in words is "one hundred twenty-three trillion, two hundred ten billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred forty-nine".