9022121 has 4 divisors (see below), whose sum is σ = 9552852. Its totient is φ = 8491392.

The previous prime is 9022109. The next prime is 9022127. The reversal of 9022121 is 1212209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1212209 = 97 ⋅12497.

It can be written as a sum of positive squares in 2 ways, for example, as 8323225 + 698896 = 2885^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 9022121 - 2¹⁸ = 8759977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 530713 = 9022121 / (9 + 0 + 2 + 2 + 1 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9022121.

It is not an unprimeable number, because it can be changed into a prime (9022127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265340 + ... + 265373.

It is an arithmetic number, because the mean of its divisors is an integer number (2388213).

Almost surely, 2^9022121 is an apocalyptic number.

It is an amenable number.

9022121 is a deficient number, since it is larger than the sum of its proper divisors (530731).

9022121 is a wasteful number, since it uses less digits than its factorization.

9022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530730.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 9022121 is about 3003.6845706565. The cubic root of 9022121 is about 208.1786633679.

The spelling of 9022121 in words is "nine million, twenty-two thousand, one hundred twenty-one".