2103211310123 has 32 divisors (see below), whose sum is σ = 2708292354048. Its totient is φ = 1585108576800.

The previous prime is 2103211310113. The next prime is 2103211310143. The reversal of 2103211310123 is 3210131123012.

It is a happy number.

It is not a de Polignac number, because 2103211310123 - 2⁴ = 2103211310107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103211310095 and 2103211310104.

It is not an unprimeable number, because it can be changed into a prime (2103211310113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4019036 + ... + 4512102.

It is an arithmetic number, because the mean of its divisors is an integer number (84634136064).

Almost surely, 2^{2103211310123} is an apocalyptic number.

2103211310123 is a deficient number, since it is larger than the sum of its proper divisors (605081043925).

2103211310123 is a wasteful number, since it uses less digits than its factorization.

2103211310123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494903.

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

Adding to 2103211310123 its reverse (3210131123012), we get a palindrome (5313342433135).

The spelling of 2103211310123 in words is "two trillion, one hundred three billion, two hundred eleven million, three hundred ten thousand, one hundred twenty-three".