1223123002 has 4 divisors (see below), whose sum is σ = 1834684506. Its totient is φ = 611561500.

The previous prime is 1223122991. The next prime is 1223123009. The reversal of 1223123002 is 2003213221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1045940281 + 177182721 = 32341^2 + 13311^2 .

It is not an unprimeable number, because it can be changed into a prime (1223123009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305780749 + ... + 305780752.

Almost surely, 2^1223123002 is an apocalyptic number.

1223123002 is a deficient number, since it is larger than the sum of its proper divisors (611561504).

1223123002 is an equidigital number, since it uses as much as digits as its factorization.

1223123002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611561503.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1223123002 is about 34973.1754634892. The cubic root of 1223123002 is about 1069.4407075031.

Adding to 1223123002 its reverse (2003213221), we get a palindrome (3226336223).

The spelling of 1223123002 in words is "one billion, two hundred twenty-three million, one hundred twenty-three thousand, two".