23212011 has 4 divisors (see below), whose sum is σ = 30949352. Its totient is φ = 15474672.

The previous prime is 23212009. The next prime is 23212051. The reversal of 23212011 is 11021232.

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

It is not a de Polignac number, because 23212011 - 2¹ = 23212009 is a prime.

It is a super-3 number, since 3×23212011³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23212051) 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, 3868666 + ... + 3868671.

It is an arithmetic number, because the mean of its divisors is an integer number (7737338).

Almost surely, 2^23212011 is an apocalyptic number.

23212011 is a deficient number, since it is larger than the sum of its proper divisors (7737341).

23212011 is an equidigital number, since it uses as much as digits as its factorization.

23212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7737340.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 23212011 is about 4817.8844942568. The cubic root of 23212011 is about 285.2578399148.

Adding to 23212011 its reverse (11021232), we get a palindrome (34233243).

The spelling of 23212011 in words is "twenty-three million, two hundred twelve thousand, eleven".