1320012123 has 16 divisors (see below), whose sum is σ = 1790733600. Its totient is φ = 864679680.

The previous prime is 1320012121. The next prime is 1320012143. The reversal of 1320012123 is 3212100231.

It is not a de Polignac number, because 1320012123 - 2¹ = 1320012121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320012121) 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, 203413 + ... + 209801.

It is an arithmetic number, because the mean of its divisors is an integer number (111920850).

Almost surely, 2^1320012123 is an apocalyptic number.

1320012123 is a deficient number, since it is larger than the sum of its proper divisors (470721477).

1320012123 is a wasteful number, since it uses less digits than its factorization.

1320012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7582.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1320012123 is about 36331.9710860834. The cubic root of 1320012123 is about 1096.9646686737.

Adding to 1320012123 its reverse (3212100231), we get a palindrome (4532112354).

The spelling of 1320012123 in words is "one billion, three hundred twenty million, twelve thousand, one hundred twenty-three".