2123002123 has 16 divisors (see below), whose sum is σ = 2351289312. Its totient is φ = 1900800000.

The previous prime is 2123002117. The next prime is 2123002153. The reversal of 2123002123 is 3212003212.

It is not a de Polignac number, because 2123002123 - 2¹³ = 2122993931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123002097 and 2123002106.

It is not an unprimeable number, because it can be changed into a prime (2123002103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209473 + ... + 219373.

It is an arithmetic number, because the mean of its divisors is an integer number (146955582).

Almost surely, 2^2123002123 is an apocalyptic number.

2123002123 is a deficient number, since it is larger than the sum of its proper divisors (228287189).

2123002123 is a wasteful number, since it uses less digits than its factorization.

2123002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10206.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2123002123 is about 46076.0471720394. The cubic root of 2123002123 is about 1285.2377588490.

Adding to 2123002123 its reverse (3212003212), we get a palindrome (5335005335).

It can be divided in two parts, 212300 and 2123, that multiplied together give a square (450712900 = 21230²).

The spelling of 2123002123 in words is "two billion, one hundred twenty-three million, two thousand, one hundred twenty-three".