2113661101123 has 12 divisors (see below), whose sum is σ = 2501994261424. Its totient is φ = 1773701622000.

The previous prime is 2113661101081. The next prime is 2113661101157. The reversal of 2113661101123 is 3211011663112.

It is not a de Polignac number, because 2113661101123 - 2³⁷ = 1976222147651 is a prime.

It is a super-2 number, since 2×2113661101123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113661101091 and 2113661101100.

It is not an unprimeable number, because it can be changed into a prime (2113661101163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 671855103 + ... + 671858248.

Almost surely, 2^{2113661101123} is an apocalyptic number.

2113661101123 is a deficient number, since it is larger than the sum of its proper divisors (388333160301).

2113661101123 is a wasteful number, since it uses less digits than its factorization.

2113661101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343713386 (or 1343713375 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

Adding to 2113661101123 its reverse (3211011663112), we get a palindrome (5324672764235).

The spelling of 2113661101123 in words is "two trillion, one hundred thirteen billion, six hundred sixty-one million, one hundred one thousand, one hundred twenty-three".