1320022221320 has 64 divisors (see below), whose sum is σ = 3430646006400. Its totient is φ = 451772308480.

The previous prime is 1320022221317. The next prime is 1320022221341. The reversal of 1320022221320 is 231222200231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1320022221292 and 1320022221301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88229300 + ... + 88244259.

It is an arithmetic number, because the mean of its divisors is an integer number (53603843850).

Almost surely, 2^{1320022221320} is an apocalyptic number.

1320022221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320022221320 is an abundant number, since it is smaller than the sum of its proper divisors (2110623785080).

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

1320022221320 is a wasteful number, since it uses less digits than its factorization.

1320022221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176473598 (or 176473594 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1320022221320 its reverse (231222200231), we get a palindrome (1551244421551).

The spelling of 1320022221320 in words is "one trillion, three hundred twenty billion, twenty-two million, two hundred twenty-one thousand, three hundred twenty".