2011322123 has 4 divisors (see below), whose sum is σ = 2011470120. Its totient is φ = 2011174128.

The previous prime is 2011322113. The next prime is 2011322141. The reversal of 2011322123 is 3212231102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2011322123 - 2⁴ = 2011322107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011322113) 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, 51290 + ... + 81567.

It is an arithmetic number, because the mean of its divisors is an integer number (502867530).

Almost surely, 2^2011322123 is an apocalyptic number.

2011322123 is a deficient number, since it is larger than the sum of its proper divisors (147997).

2011322123 is a wasteful number, since it uses less digits than its factorization.

2011322123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147996.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2011322123 is about 44847.7660870639. The cubic root of 2011322123 is about 1262.2940744159.

Adding to 2011322123 its reverse (3212231102), we get a palindrome (5223553225).

The spelling of 2011322123 in words is "two billion, eleven million, three hundred twenty-two thousand, one hundred twenty-three".