22031121 has 8 divisors (see below), whose sum is σ = 33571264. Its totient is φ = 12589200.

The previous prime is 22031077. The next prime is 22031123. The reversal of 22031121 is 12113022.

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

It is not a de Polignac number, because 22031121 - 2⁶ = 22031057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22031097 and 22031106.

It is not an unprimeable number, because it can be changed into a prime (22031123) 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, 524530 + ... + 524571.

It is an arithmetic number, because the mean of its divisors is an integer number (4196408).

Almost surely, 2^22031121 is an apocalyptic number.

22031121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22031121 is a deficient number, since it is larger than the sum of its proper divisors (11540143).

22031121 is a wasteful number, since it uses less digits than its factorization.

22031121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049111.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 22031121 is about 4693.7320971696. The cubic root of 22031121 is about 280.3359954591.

Adding to 22031121 its reverse (12113022), we get a palindrome (34144143).

The spelling of 22031121 in words is "twenty-two million, thirty-one thousand, one hundred twenty-one".