1220433440331 has 16 divisors (see below), whose sum is σ = 1863277613568. Its totient is φ = 696051969600.

The previous prime is 1220433440311. The next prime is 1220433440363. The reversal of 1220433440331 is 1330443340221.

It is a happy number.

It is not a de Polignac number, because 1220433440331 - 2¹⁰ = 1220433439307 is a prime.

It is a super-2 number, since 2×1220433440331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220433440311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55762455 + ... + 55784336.

It is an arithmetic number, because the mean of its divisors is an integer number (116454850848).

Almost surely, 2^{1220433440331} is an apocalyptic number.

1220433440331 is a deficient number, since it is larger than the sum of its proper divisors (642844173237).

1220433440331 is a wasteful number, since it uses less digits than its factorization.

1220433440331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111547322.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 1220433440331 its reverse (1330443340221), we get a palindrome (2550876780552).

The spelling of 1220433440331 in words is "one trillion, two hundred twenty billion, four hundred thirty-three million, four hundred forty thousand, three hundred thirty-one".