1031220341225 has 12 divisors (see below), whose sum is σ = 1278949446684. Its totient is φ = 824823870720.

The previous prime is 1031220341171. The next prime is 1031220341227. The reversal of 1031220341225 is 5221430221301.

It can be written as a sum of positive squares in 6 ways, for example, as 152762159104 + 878458182121 = 390848^2 + 937261^2 .

It is not a de Polignac number, because 1031220341225 - 2²² = 1031216146921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031220341194 and 1031220341203.

It is not an unprimeable number, because it can be changed into a prime (1031220341227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3671924 + ... + 3942773.

It is an arithmetic number, because the mean of its divisors is an integer number (106579120557).

Almost surely, 2^{1031220341225} is an apocalyptic number.

It is an amenable number.

1031220341225 is a deficient number, since it is larger than the sum of its proper divisors (247729105459).

1031220341225 is an equidigital number, since it uses as much as digits as its factorization.

1031220341225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7620124 (or 7620119 counting only the distinct ones).

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

Adding to 1031220341225 its reverse (5221430221301), we get a palindrome (6252650562526).

The spelling of 1031220341225 in words is "one trillion, thirty-one billion, two hundred twenty million, three hundred forty-one thousand, two hundred twenty-five".