22151241 has 24 divisors (see below), whose sum is σ = 37350144. Its totient is φ = 12386880.

The previous prime is 22151209. The next prime is 22151249. The reversal of 22151241 is 14215122.

It is not a de Polignac number, because 22151241 - 2⁵ = 22151209 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22151249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 780 + ... + 6701.

It is an arithmetic number, because the mean of its divisors is an integer number (1556256).

Almost surely, 2^22151241 is an apocalyptic number.

22151241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22151241 is a deficient number, since it is larger than the sum of its proper divisors (15198903).

22151241 is a wasteful number, since it uses less digits than its factorization.

22151241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7541 (or 7538 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 22151241 is about 4706.5104907989. The cubic root of 22151241 is about 280.8445630811.

Adding to 22151241 its reverse (14215122), we get a palindrome (36366363).

The spelling of 22151241 in words is "twenty-two million, one hundred fifty-one thousand, two hundred forty-one".