123221453 has 2 divisors, whose sum is σ = 123221454. Its totient is φ = 123221452.

The previous prime is 123221437. The next prime is 123221459. The reversal of 123221453 is 354122321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116683204 + 6538249 = 10802^2 + 2557^2 .

It is a cyclic number.

It is not a de Polignac number, because 123221453 - 2⁴ = 123221437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123221459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610726 + 61610727.

It is an arithmetic number, because the mean of its divisors is an integer number (61610727).

Almost surely, 2^123221453 is an apocalyptic number.

It is an amenable number.

123221453 is a deficient number, since it is larger than the sum of its proper divisors (1).

123221453 is an equidigital number, since it uses as much as digits as its factorization.

123221453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 123221453 is about 11100.5158889126. The cubic root of 123221453 is about 497.6172672059.

Adding to 123221453 its reverse (354122321), we get a palindrome (477343774).

The spelling of 123221453 in words is "one hundred twenty-three million, two hundred twenty-one thousand, four hundred fifty-three".