321220203402413 has 4 divisors (see below), whose sum is σ = 367108803888480. Its totient is φ = 275331602916348.

The previous prime is 321220203402331. The next prime is 321220203402419. The reversal of 321220203402413 is 314204302022123.

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.

It is a cyclic number.

It is not a de Polignac number, because 321220203402413 - 2⁸ = 321220203402157 is a prime.

It is a super-2 number, since 2×321220203402413² (a number of 30 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 (321220203402419) 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, 22944300243023 + ... + 22944300243036.

It is an arithmetic number, because the mean of its divisors is an integer number (91777200972120).

Almost surely, 2^{321220203402413} is an apocalyptic number.

It is an amenable number.

321220203402413 is a deficient number, since it is larger than the sum of its proper divisors (45888600486067).

321220203402413 is an equidigital number, since it uses as much as digits as its factorization.

321220203402413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45888600486066.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 321220203402413 its reverse (314204302022123), we get a palindrome (635424505424536).

The spelling of 321220203402413 in words is "three hundred twenty-one trillion, two hundred twenty billion, two hundred three million, four hundred two thousand, four hundred thirteen".