2123120120101 has 4 divisors (see below), whose sum is σ = 2123490200812. Its totient is φ = 2122750039392.

The previous prime is 2123120120029. The next prime is 2123120120113. The reversal of 2123120120101 is 1010210213212.

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 15556575076 + 2107563545025 = 124726^2 + 1451745^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123120120101 - 2²³ = 2123111731493 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 (2123120160101) 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, 185031750 + ... + 185043223.

It is an arithmetic number, because the mean of its divisors is an integer number (530872550203).

Almost surely, 2^{2123120120101} is an apocalyptic number.

It is an amenable number.

2123120120101 is a deficient number, since it is larger than the sum of its proper divisors (370080711).

2123120120101 is an equidigital number, since it uses as much as digits as its factorization.

2123120120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370080710.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2123120120101 its reverse (1010210213212), we get a palindrome (3133330333313).

The spelling of 2123120120101 in words is "two trillion, one hundred twenty-three billion, one hundred twenty million, one hundred twenty thousand, one hundred one".