1320223101 has 4 divisors (see below), whose sum is σ = 1760297472. Its totient is φ = 880148732.

The previous prime is 1320223087. The next prime is 1320223139. The reversal of 1320223101 is 1013220231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1013220231 = 3 ⋅337740077.

It is a cyclic number.

It is not a de Polignac number, because 1320223101 - 2¹¹ = 1320221053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320213101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220037181 + ... + 220037186.

It is an arithmetic number, because the mean of its divisors is an integer number (440074368).

Almost surely, 2^1320223101 is an apocalyptic number.

It is an amenable number.

1320223101 is a deficient number, since it is larger than the sum of its proper divisors (440074371).

1320223101 is an equidigital number, since it uses as much as digits as its factorization.

1320223101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440074370.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1320223101 is about 36334.8744459094. The cubic root of 1320223101 is about 1097.0231083094.

Adding to 1320223101 its reverse (1013220231), we get a palindrome (2333443332).

The spelling of 1320223101 in words is "one billion, three hundred twenty million, two hundred twenty-three thousand, one hundred one".