23612121 has 16 divisors (see below), whose sum is σ = 37672320. Its totient is φ = 14530320.

The previous prime is 23612107. The next prime is 23612131. The reversal of 23612121 is 12121632.

It is not a de Polignac number, because 23612121 - 2¹⁰ = 23611097 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23612094 and 23612103.

It is not an unprimeable number, because it can be changed into a prime (23612101) 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, 33285 + ... + 33986.

It is an arithmetic number, because the mean of its divisors is an integer number (2354520).

Almost surely, 2^23612121 is an apocalyptic number.

It is an amenable number.

23612121 is a deficient number, since it is larger than the sum of its proper divisors (14060199).

23612121 is a wasteful number, since it uses less digits than its factorization.

23612121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67293 (or 67287 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 23612121 is about 4859.2304946360. The cubic root of 23612121 is about 286.8875268997.

Adding to 23612121 its reverse (12121632), we get a palindrome (35733753).

The spelling of 23612121 in words is "twenty-three million, six hundred twelve thousand, one hundred twenty-one".