2123313101109 has 40 divisors (see below), whose sum is σ = 3359286777440. Its totient is φ = 1332812457504.

The previous prime is 2123313101087. The next prime is 2123313101123. The reversal of 2123313101109 is 9011013133212.

2123313101109 is a `hidden beast` number, since 2 + 1 + 2 + 331 + 310 + 1 + 10 + 9 = 666.

It is not a de Polignac number, because 2123313101109 - 2⁷ = 2123313100981 is a prime.

It is a super-2 number, since 2×2123313101109² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123313101309) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3981262 + ... + 4482975.

It is an arithmetic number, because the mean of its divisors is an integer number (83982169436).

Almost surely, 2^{2123313101109} is an apocalyptic number.

It is an amenable number.

2123313101109 is a deficient number, since it is larger than the sum of its proper divisors (1235973676331).

2123313101109 is a wasteful number, since it uses less digits than its factorization.

2123313101109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8464431 (or 8464422 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The spelling of 2123313101109 in words is "two trillion, one hundred twenty-three billion, three hundred thirteen million, one hundred one thousand, one hundred nine".