1220122431305 has 4 divisors (see below), whose sum is σ = 1464146917572. Its totient is φ = 976097945040.

The previous prime is 1220122431271. The next prime is 1220122431347. The reversal of 1220122431305 is 5031342210221.

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 363653623369 + 856468807936 = 603037^2 + 925456^2 .

It is not a de Polignac number, because 1220122431305 - 2¹⁴ = 1220122414921 is a prime.

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, 122012243126 + ... + 122012243135.

It is an arithmetic number, because the mean of its divisors is an integer number (366036729393).

Almost surely, 2^{1220122431305} is an apocalyptic number.

It is an amenable number.

1220122431305 is a deficient number, since it is larger than the sum of its proper divisors (244024486267).

1220122431305 is an equidigital number, since it uses as much as digits as its factorization.

1220122431305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244024486266.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1220122431305 its reverse (5031342210221), we get a palindrome (6251464641526).

The spelling of 1220122431305 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, four hundred thirty-one thousand, three hundred five".