320212220413 has 4 divisors (see below), whose sum is σ = 323810110620. Its totient is φ = 316614330208.

The previous prime is 320212220411. The next prime is 320212220423. The reversal of 320212220413 is 314022212023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314022212023 = 13 ⋅24155554771.

It can be written as a sum of positive squares in 2 ways, for example, as 22590691204 + 297621529209 = 150302^2 + 545547^2 .

It is a cyclic number.

It is not a de Polignac number, because 320212220413 - 2¹ = 320212220411 is a prime.

It is a super-2 number, since 2×320212220413² (a number of 24 digits) 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 (320212220411) 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, 1798944970 + ... + 1798945147.

It is an arithmetic number, because the mean of its divisors is an integer number (80952527655).

Almost surely, 2^320212220413 is an apocalyptic number.

It is an amenable number.

320212220413 is a deficient number, since it is larger than the sum of its proper divisors (3597890207).

320212220413 is an equidigital number, since it uses as much as digits as its factorization.

320212220413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597890206.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 320212220413 its reverse (314022212023), we get a palindrome (634234432436).

The spelling of 320212220413 in words is "three hundred twenty billion, two hundred twelve million, two hundred twenty thousand, four hundred thirteen".