1220234140145 has 8 divisors (see below), whose sum is σ = 1503856129704. Its totient is φ = 949803871104.

The previous prime is 1220234140123. The next prime is 1220234140159. The reversal of 1220234140145 is 5410414320221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 331605525904 + 888628614241 = 575852^2 + 942671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220234140145 - 2²⁰ = 1220233091569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3297929924 + ... + 3297930293.

It is an arithmetic number, because the mean of its divisors is an integer number (187982016213).

Almost surely, 2^{1220234140145} is an apocalyptic number.

It is an amenable number.

1220234140145 is a deficient number, since it is larger than the sum of its proper divisors (283621989559).

1220234140145 is an equidigital number, since it uses as much as digits as its factorization.

1220234140145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6595860259.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 1220234140145 its reverse (5410414320221), we get a palindrome (6630648460366).

The spelling of 1220234140145 in words is "one trillion, two hundred twenty billion, two hundred thirty-four million, one hundred forty thousand, one hundred forty-five".