22131235 has 8 divisors (see below), whose sum is σ = 30351456. Its totient is φ = 15175680.

The previous prime is 22131223. The next prime is 22131259. The reversal of 22131235 is 53213122.

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

It is not a de Polignac number, because 22131235 - 2¹³ = 22123043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 316126 + ... + 316195.

It is an arithmetic number, because the mean of its divisors is an integer number (3793932).

Almost surely, 2^22131235 is an apocalyptic number.

22131235 is a deficient number, since it is larger than the sum of its proper divisors (8220221).

22131235 is an equidigital number, since it uses as much as digits as its factorization.

22131235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632333.

The product of its digits is 360, while the sum is 19.

The square root of 22131235 is about 4704.3846568919. The cubic root of 22131235 is about 280.7599889082.

Adding to 22131235 its reverse (53213122), we get a palindrome (75344357).

It can be divided in two parts, 22131 and 235, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 22131235 in words is "twenty-two million, one hundred thirty-one thousand, two hundred thirty-five".