24220121 has 8 divisors (see below), whose sum is σ = 25688520. Its totient is φ = 22756608.

The previous prime is 24220073. The next prime is 24220123. The reversal of 24220121 is 12102242.

It can be written as a sum of positive squares in 4 ways, for example, as 5175625 + 19044496 = 2275^2 + 4364^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 24220121 - 2¹⁸ = 23957977 is a prime.

It is a super-2 number, since 2×24220121² = 1173228522509282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24220096 and 24220105.

It is not an unprimeable number, because it can be changed into a prime (24220123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16235 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (3211065).

Almost surely, 2^24220121 is an apocalyptic number.

It is an amenable number.

24220121 is a deficient number, since it is larger than the sum of its proper divisors (1468399).

24220121 is a wasteful number, since it uses less digits than its factorization.

24220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 24220121 is about 4921.3942130254. The cubic root of 24220121 is about 289.3290911563.

Adding to 24220121 its reverse (12102242), we get a palindrome (36322363).

The spelling of 24220121 in words is "twenty-four million, two hundred twenty thousand, one hundred twenty-one".