22250121 has 8 divisors (see below), whose sum is σ = 31228320. Its totient is φ = 14052672.

The previous prime is 22250117. The next prime is 22250143. The reversal of 22250121 is 12105222.

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

It is not a de Polignac number, because 22250121 - 2² = 22250117 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22250121.

It is not an unprimeable number, because it can be changed into a prime (22250101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195120 + ... + 195233.

It is an arithmetic number, because the mean of its divisors is an integer number (3903540).

Almost surely, 2^22250121 is an apocalyptic number.

It is an amenable number.

22250121 is a deficient number, since it is larger than the sum of its proper divisors (8978199).

22250121 is a wasteful number, since it uses less digits than its factorization.

22250121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390375.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22250121 is about 4717.0033919852. The cubic root of 22250121 is about 281.2618262681.

Adding to 22250121 its reverse (12105222), we get a palindrome (34355343).

The spelling of 22250121 in words is "twenty-two million, two hundred fifty thousand, one hundred twenty-one".