1303122321228 has 192 divisors, whose sum is σ = 3802228899840. Its totient is φ = 338187979008.

The previous prime is 1303122321211. The next prime is 1303122321229. The reversal of 1303122321228 is 8221232213031.

It is a super-3 number, since 3×1303122321228³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1303122321195 and 1303122321204.

It is not an unprimeable number, because it can be changed into a prime (1303122321229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71911153 + ... + 71929271.

It is an arithmetic number, because the mean of its divisors is an integer number (19803275520).

Almost surely, 2^{1303122321228} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1303122321228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1901114449920).

1303122321228 is an abundant number, since it is smaller than the sum of its proper divisors (2499106578612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1303122321228 is a wasteful number, since it uses less digits than its factorization.

1303122321228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19196 (or 19194 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 1303122321228 its reverse (8221232213031), we get a palindrome (9524354534259).

The spelling of 1303122321228 in words is "one trillion, three hundred three billion, one hundred twenty-two million, three hundred twenty-one thousand, two hundred twenty-eight".