1230120311213 has 4 divisors (see below), whose sum is σ = 1256293083840. Its totient is φ = 1203947538588.

The previous prime is 1230120311209. The next prime is 1230120311227. The reversal of 1230120311213 is 3121130210321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1230120311213 - 2² = 1230120311209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230120311293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13086386243 + ... + 13086386336.

It is an arithmetic number, because the mean of its divisors is an integer number (314073270960).

Almost surely, 2^{1230120311213} is an apocalyptic number.

It is an amenable number.

1230120311213 is a deficient number, since it is larger than the sum of its proper divisors (26172772627).

1230120311213 is an equidigital number, since it uses as much as digits as its factorization.

1230120311213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26172772626.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1230120311213 its reverse (3121130210321), we get a palindrome (4351250521534).

The spelling of 1230120311213 in words is "one trillion, two hundred thirty billion, one hundred twenty million, three hundred eleven thousand, two hundred thirteen".