23220101 has 4 divisors (see below), whose sum is σ = 23259852. Its totient is φ = 23180352.

The previous prime is 23220091. The next prime is 23220139. The reversal of 23220101 is 10102232.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17222500 + 5997601 = 4150^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 23220101 - 2⁶ = 23220037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220601) 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, 18986 + ... + 20171.

It is an arithmetic number, because the mean of its divisors is an integer number (5814963).

Almost surely, 2^23220101 is an apocalyptic number.

It is an amenable number.

23220101 is a deficient number, since it is larger than the sum of its proper divisors (39751).

23220101 is an equidigital number, since it uses as much as digits as its factorization.

23220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39750.

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

The square root of 23220101 is about 4818.7240012269. The cubic root of 23220101 is about 285.2909760338.

Adding to 23220101 its reverse (10102232), we get a palindrome (33322333).

The spelling of 23220101 in words is "twenty-three million, two hundred twenty thousand, one hundred one".