1223142203 has 4 divisors (see below), whose sum is σ = 1224789168. Its totient is φ = 1221495240.

The previous prime is 1223142187. The next prime is 1223142269. The reversal of 1223142203 is 3022413221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3022413221 = 17 ⋅177789013.

It is a cyclic number.

It is not a de Polignac number, because 1223142203 - 2⁴ = 1223142187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223142103) 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, 822368 + ... + 823853.

It is an arithmetic number, because the mean of its divisors is an integer number (306197292).

Almost surely, 2^1223142203 is an apocalyptic number.

1223142203 is a deficient number, since it is larger than the sum of its proper divisors (1646965).

1223142203 is an equidigital number, since it uses as much as digits as its factorization.

1223142203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646964.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1223142203 is about 34973.4499728008. The cubic root of 1223142203 is about 1069.4463036216.

Adding to 1223142203 its reverse (3022413221), we get a palindrome (4245555424).

The spelling of 1223142203 in words is "one billion, two hundred twenty-three million, one hundred forty-two thousand, two hundred three".