1220331332123 has 6 divisors (see below), whose sum is σ = 1222972944444. Its totient is φ = 1217695413396.

The previous prime is 1220331332113. The next prime is 1220331332167. The reversal of 1220331332123 is 3212331330221.

It is not a de Polignac number, because 1220331332123 - 2²⁸ = 1220062896667 is a prime.

It is a super-2 number, since 2×1220331332123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220331332092 and 1220331332101.

It is not an unprimeable number, because it can be changed into a prime (1220331332113) 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 5 ways as a sum of consecutive naturals, for example, 2631965 + ... + 3060702.

It is an arithmetic number, because the mean of its divisors is an integer number (203828824074).

Almost surely, 2^{1220331332123} is an apocalyptic number.

1220331332123 is a deficient number, since it is larger than the sum of its proper divisors (2641612321).

1220331332123 is an frugal number, since it uses more digits than its factorization.

1220331332123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5693593 (or 5693130 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1220331332123 its reverse (3212331330221), we get a palindrome (4432662662344).

The spelling of 1220331332123 in words is "one trillion, two hundred twenty billion, three hundred thirty-one million, three hundred thirty-two thousand, one hundred twenty-three".