1220430144021 has 32 divisors (see below), whose sum is σ = 1776832796160. Its totient is φ = 738962683200.

The previous prime is 1220430143851. The next prime is 1220430144029. The reversal of 1220430144021 is 1204410340221.

It is not a de Polignac number, because 1220430144021 - 2¹⁵ = 1220430111253 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1220430143982 and 1220430144000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220430144029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254837895 + ... + 254842683.

It is an arithmetic number, because the mean of its divisors is an integer number (55526024880).

Almost surely, 2^{1220430144021} is an apocalyptic number.

1220430144021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220430144021 is a deficient number, since it is larger than the sum of its proper divisors (556402652139).

1220430144021 is a wasteful number, since it uses less digits than its factorization.

1220430144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10417.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1220430144021 its reverse (1204410340221), we get a palindrome (2424840484242).

The spelling of 1220430144021 in words is "one trillion, two hundred twenty billion, four hundred thirty million, one hundred forty-four thousand, twenty-one".