1220300123 has 16 divisors (see below), whose sum is σ = 1414471680. Its totient is φ = 1031131296.

The previous prime is 1220300119. The next prime is 1220300129. The reversal of 1220300123 is 3210030221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220300123 - 2² = 1220300119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220300098 and 1220300107.

It is not an unprimeable number, because it can be changed into a prime (1220300129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475961 + ... + 478517.

It is an arithmetic number, because the mean of its divisors is an integer number (88404480).

Almost surely, 2^1220300123 is an apocalyptic number.

1220300123 is a deficient number, since it is larger than the sum of its proper divisors (194171557).

1220300123 is an equidigital number, since it uses as much as digits as its factorization.

1220300123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3506.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1220300123 is about 34932.7943772038. The cubic root of 1220300123 is about 1068.6173432786.

Adding to 1220300123 its reverse (3210030221), we get a palindrome (4430330344).

The spelling of 1220300123 in words is "one billion, two hundred twenty million, three hundred thousand, one hundred twenty-three".