2120123001013 has 4 divisors (see below), whose sum is σ = 2177423622700. Its totient is φ = 2062822379328.

The previous prime is 2120123000959. The next prime is 2120123001023. The reversal of 2120123001013 is 3101003210212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1072380371364 + 1047742629649 = 1035558^2 + 1023593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120123001013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120123001023) 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, 28650310788 + ... + 28650310861.

It is an arithmetic number, because the mean of its divisors is an integer number (544355905675).

Almost surely, 2^{2120123001013} is an apocalyptic number.

It is an amenable number.

2120123001013 is a deficient number, since it is larger than the sum of its proper divisors (57300621687).

2120123001013 is an equidigital number, since it uses as much as digits as its factorization.

2120123001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57300621686.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2120123001013 its reverse (3101003210212), we get a palindrome (5221126211225).

The spelling of 2120123001013 in words is "two trillion, one hundred twenty billion, one hundred twenty-three million, one thousand, thirteen".