22641121 has 2 divisors, whose sum is σ = 22641122.
Its totient is φ = 22641120.
The previous prime is 22641107. The next prime is 22641133. The reversal of 22641121 is 12114622.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 19713600 + 2927521 = 4440^2 + 1711^2
It is a cyclic number.
It is not a de Polignac number, because 22641121 - 25 = 22641089 is a prime.
It is not a weakly prime, because it can be changed into another prime (22641181) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11320560 + 11320561.
It is an arithmetic number, because the mean of its divisors is an integer number (11320561).
Almost surely, 222641121 is an apocalyptic number.
It is an amenable number.
22641121 is a deficient number, since it is larger than the sum of its proper divisors (1).
22641121 is an equidigital number, since it uses as much as digits as its factorization.
22641121 is an evil number, because the sum of its binary digits is even.
The product of its digits is 192, while the sum is 19.
The square root of 22641121 is about 4758.2686977513.
The cubic root of 22641121 is about 282.8998009597.
Adding to 22641121 its reverse (12114622), we get a palindrome (34755743).
The spelling of 22641121 in words is "twenty-two million, six hundred forty-one thousand, one hundred twenty-one".