23120011 has 4 divisors (see below), whose sum is σ = 23349024. Its totient is φ = 22891000.

The previous prime is 23119973. The next prime is 23120029. The reversal of 23120011 is 11002132.

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 23120011 - 2¹³ = 23111819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23120011.

It is not an unprimeable number, because it can be changed into a prime (23120311) 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, 114355 + ... + 114556.

It is an arithmetic number, because the mean of its divisors is an integer number (5837256).

Almost surely, 2^23120011 is an apocalyptic number.

23120011 is a deficient number, since it is larger than the sum of its proper divisors (229013).

23120011 is a wasteful number, since it uses less digits than its factorization.

23120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229012.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 23120011 is about 4808.3272559176. The cubic root of 23120011 is about 284.8804710626.

Adding to 23120011 its reverse (11002132), we get a palindrome (34122143).

The spelling of 23120011 in words is "twenty-three million, one hundred twenty thousand, eleven".