403220215142321 has 16 divisors (see below), whose sum is σ = 411890625820800. Its totient is φ = 394633582761600.

The previous prime is 403220215142309. The next prime is 403220215142347. The reversal of 403220215142321 is 123241512022304.

It is a cyclic number.

It is not a de Polignac number, because 403220215142321 - 2²⁶ = 403220148033457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403220215142221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79746191 + ... + 84651611.

It is an arithmetic number, because the mean of its divisors is an integer number (25743164113800).

Almost surely, 2^{403220215142321} is an apocalyptic number.

It is an amenable number.

403220215142321 is a deficient number, since it is larger than the sum of its proper divisors (8670410678479).

403220215142321 is a wasteful number, since it uses less digits than its factorization.

403220215142321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4913960.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 403220215142321 its reverse (123241512022304), we get a palindrome (526461727164625).

The spelling of 403220215142321 in words is "four hundred three trillion, two hundred twenty billion, two hundred fifteen million, one hundred forty-two thousand, three hundred twenty-one".