2120313220123 has 4 divisors (see below), whose sum is σ = 2423215108720. Its totient is φ = 1817411331528.

The previous prime is 2120313220097. The next prime is 2120313220133. The reversal of 2120313220123 is 3210223130212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120313220123 - 2⁹ = 2120313219611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120313220094 and 2120313220103.

It is not an unprimeable number, because it can be changed into a prime (2120313220133) 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, 151450944288 + ... + 151450944301.

It is an arithmetic number, because the mean of its divisors is an integer number (605803777180).

Almost surely, 2^{2120313220123} is an apocalyptic number.

2120313220123 is a deficient number, since it is larger than the sum of its proper divisors (302901888597).

2120313220123 is an equidigital number, since it uses as much as digits as its factorization.

2120313220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302901888596.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2120313220123 its reverse (3210223130212), we get a palindrome (5330536350335).

The spelling of 2120313220123 in words is "two trillion, one hundred twenty billion, three hundred thirteen million, two hundred twenty thousand, one hundred twenty-three".