23200121 has 32 divisors (see below), whose sum is σ = 30597120. Its totient is φ = 17107200.

The previous prime is 23200117. The next prime is 23200127. The reversal of 23200121 is 12100232.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23200121 - 2² = 23200117 is a prime.

It is a super-2 number, since 2×23200121² = 1076491228829282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23200127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69926 + ... + 70256.

It is an arithmetic number, because the mean of its divisors is an integer number (956160).

Almost surely, 2^23200121 is an apocalyptic number.

It is an amenable number.

23200121 is a deficient number, since it is larger than the sum of its proper divisors (7396999).

23200121 is a wasteful number, since it uses less digits than its factorization.

23200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 23200121 is about 4816.6503921294. The cubic root of 23200121 is about 285.2091252645.

Adding to 23200121 its reverse (12100232), we get a palindrome (35300353).

The spelling of 23200121 in words is "twenty-three million, two hundred thousand, one hundred twenty-one".