1230221453 has 4 divisors (see below), whose sum is σ = 1269906048. Its totient is φ = 1190536860.

The previous prime is 1230221437. The next prime is 1230221459. The reversal of 1230221453 is 3541220321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3541220321 = 709 ⋅4994669.

It is a cyclic number.

It is not a de Polignac number, because 1230221453 - 2⁴ = 1230221437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230221459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19842251 + ... + 19842312.

It is an arithmetic number, because the mean of its divisors is an integer number (317476512).

Almost surely, 2^1230221453 is an apocalyptic number.

It is an amenable number.

1230221453 is a deficient number, since it is larger than the sum of its proper divisors (39684595).

1230221453 is an equidigital number, since it uses as much as digits as its factorization.

1230221453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39684594.

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

The square root of 1230221453 is about 35074.5128690335. The cubic root of 1230221453 is about 1071.5055676976.

Adding to 1230221453 its reverse (3541220321), we get a palindrome (4771441774).

The spelling of 1230221453 in words is "one billion, two hundred thirty million, two hundred twenty-one thousand, four hundred fifty-three".