1323321101020 has 24 divisors (see below), whose sum is σ = 2781303762384. Its totient is φ = 528884735616.

The previous prime is 1323321101017. The next prime is 1323321101023. The reversal of 1323321101020 is 201011233231.

It is an interprime number because it is at equal distance from previous prime (1323321101017) and next prime (1323321101023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323321101023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27707094 + ... + 27754813.

It is an arithmetic number, because the mean of its divisors is an integer number (115887656766).

Almost surely, 2^{1323321101020} is an apocalyptic number.

1323321101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323321101020 is an abundant number, since it is smaller than the sum of its proper divisors (1457982661364).

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

1323321101020 is a wasteful number, since it uses less digits than its factorization.

1323321101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55463109 (or 55463107 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1323321101020 its reverse (201011233231), we get a palindrome (1524332334251).

The spelling of 1323321101020 in words is "one trillion, three hundred twenty-three billion, three hundred twenty-one million, one hundred one thousand, twenty".