20122231 has 8 divisors (see below), whose sum is σ = 20480240. Its totient is φ = 19766592.

The previous prime is 20122213. The next prime is 20122241. The reversal of 20122231 is 13222102.

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

It is a cyclic number.

It is not a de Polignac number, because 20122231 - 2⁵ = 20122199 is a prime.

It is a super-2 number, since 2×20122231² = 809808360834722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26860 + ... + 27598.

It is an arithmetic number, because the mean of its divisors is an integer number (2560030).

Almost surely, 2^20122231 is an apocalyptic number.

20122231 is a deficient number, since it is larger than the sum of its proper divisors (358009).

20122231 is an equidigital number, since it uses as much as digits as its factorization.

20122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20122231 is about 4485.7809799410. The cubic root of 20122231 is about 271.9936155869.

Adding to 20122231 its reverse (13222102), we get a palindrome (33344333).

The spelling of 20122231 in words is "twenty million, one hundred twenty-two thousand, two hundred thirty-one".