1223020123 has 8 divisors (see below), whose sum is σ = 1317934800. Its totient is φ = 1128224928.

The previous prime is 1223020039. The next prime is 1223020157. The reversal of 1223020123 is 3210203221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223020123 - 2²¹ = 1220922971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223020097 and 1223020106.

It is not an unprimeable number, because it can be changed into a prime (1223020223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8008 + ... + 50101.

It is an arithmetic number, because the mean of its divisors is an integer number (164741850).

Almost surely, 2^1223020123 is an apocalyptic number.

1223020123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1223020123 is a deficient number, since it is larger than the sum of its proper divisors (94914677).

1223020123 is a wasteful number, since it uses less digits than its factorization.

1223020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59741.

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

The square root of 1223020123 is about 34971.7046052948. The cubic root of 1223020123 is about 1069.4107224906.

Adding to 1223020123 its reverse (3210203221), we get a palindrome (4433223344).

The spelling of 1223020123 in words is "one billion, two hundred twenty-three million, twenty thousand, one hundred twenty-three".