1320022231 has 4 divisors (see below), whose sum is σ = 1440024264. Its totient is φ = 1200020200.

The previous prime is 1320022217. The next prime is 1320022237. The reversal of 1320022231 is 1322200231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320022231 - 2⁵ = 1320022199 is a prime.

It is a super-2 number, since 2×1320022231² = 3484917380668434722, 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 (1320022237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60001000 + ... + 60001021.

It is an arithmetic number, because the mean of its divisors is an integer number (360006066).

Almost surely, 2^1320022231 is an apocalyptic number.

1320022231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1320022231 is a deficient number, since it is larger than the sum of its proper divisors (120002033).

1320022231 is a wasteful number, since it uses less digits than its factorization.

1320022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120002032.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1320022231 is about 36332.1101919500. The cubic root of 1320022231 is about 1096.9674686709.

Adding to 1320022231 its reverse (1322200231), we get a palindrome (2642222462).

The spelling of 1320022231 in words is "one billion, three hundred twenty million, twenty-two thousand, two hundred thirty-one".