1320031212123 has 8 divisors (see below), whose sum is σ = 1895429432848. Its totient is φ = 812326899744.

The previous prime is 1320031212121. The next prime is 1320031212173. The reversal of 1320031212123 is 3212121300231.

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

It is not a de Polignac number, because 1320031212123 - 2¹ = 1320031212121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320031212123.

It is not an unprimeable number, because it can be changed into a prime (1320031212121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16923477040 + ... + 16923477117.

It is an arithmetic number, because the mean of its divisors is an integer number (236928679106).

Almost surely, 2^{1320031212123} is an apocalyptic number.

1320031212123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1320031212123 is a deficient number, since it is larger than the sum of its proper divisors (575398220725).

1320031212123 is a wasteful number, since it uses less digits than its factorization.

1320031212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33846954173.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1320031212123 its reverse (3212121300231), we get a palindrome (4532152512354).

The spelling of 1320031212123 in words is "one trillion, three hundred twenty billion, thirty-one million, two hundred twelve thousand, one hundred twenty-three".