321212245540105 has 4 divisors (see below), whose sum is σ = 385454694648132. Its totient is φ = 256969796432080.

The previous prime is 321212245539931. The next prime is 321212245540187. The reversal of 321212245540105 is 501045542212123.

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 36421611241024 + 284790634299081 = 6035032^2 + 16875741^2 .

It is not a de Polignac number, because 321212245540105 - 2¹³ = 321212245531913 is a prime.

It is a super-2 number, since 2×321212245540105² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32121224554006 + ... + 32121224554015.

It is an arithmetic number, because the mean of its divisors is an integer number (96363673662033).

Almost surely, 2^{321212245540105} is an apocalyptic number.

It is an amenable number.

321212245540105 is a deficient number, since it is larger than the sum of its proper divisors (64242449108027).

321212245540105 is an equidigital number, since it uses as much as digits as its factorization.

321212245540105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64242449108026.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 321212245540105 its reverse (501045542212123), we get a palindrome (822257787752228).

The spelling of 321212245540105 in words is "three hundred twenty-one trillion, two hundred twelve billion, two hundred forty-five million, five hundred forty thousand, one hundred five".