2120223001321 has 4 divisors (see below), whose sum is σ = 2120227568212. Its totient is φ = 2120218434432.

The previous prime is 2120223001313. The next prime is 2120223001361. The reversal of 2120223001321 is 1231003220212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 107853784921 + 2012369216400 = 328411^2 + 1418580^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120223001321 - 2³ = 2120223001313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120223001361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1496700 + ... + 2545693.

It is an arithmetic number, because the mean of its divisors is an integer number (530056892053).

Almost surely, 2^{2120223001321} is an apocalyptic number.

It is an amenable number.

2120223001321 is a deficient number, since it is larger than the sum of its proper divisors (4566891).

2120223001321 is an equidigital number, since it uses as much as digits as its factorization.

2120223001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566890.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2120223001321 its reverse (1231003220212), we get a palindrome (3351226221533).

The spelling of 2120223001321 in words is "two trillion, one hundred twenty billion, two hundred twenty-three million, one thousand, three hundred twenty-one".