1204155223 has 2 divisors, whose sum is σ = 1204155224. Its totient is φ = 1204155222.

The previous prime is 1204155163. The next prime is 1204155263. The reversal of 1204155223 is 3225514021.

It is a strong prime.

It is an emirp because it is prime and its reverse (3225514021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1204155223 - 2²⁵ = 1170600791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204155263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602077611 + 602077612.

It is an arithmetic number, because the mean of its divisors is an integer number (602077612).

Almost surely, 2^1204155223 is an apocalyptic number.

1204155223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204155223 is an equidigital number, since it uses as much as digits as its factorization.

1204155223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1204155223 is about 34700.9397999535. The cubic root of 1204155223 is about 1063.8837071040.

Adding to 1204155223 its reverse (3225514021), we get a palindrome (4429669244).

The spelling of 1204155223 in words is "one billion, two hundred four million, one hundred fifty-five thousand, two hundred twenty-three".