1302130321020 has 72 divisors (see below), whose sum is σ = 3953294414160. Its totient is φ = 346927138560.

The previous prime is 1302130321013. The next prime is 1302130321021. The reversal of 1302130321020 is 201230312031.

1302130321020 is a `hidden beast` number, since 1 + 302 + 130 + 3 + 210 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1302130320984 and 1302130321002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302130321021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3000526 + ... + 3406965.

Almost surely, 2^{1302130321020} is an apocalyptic number.

1302130321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302130321020 is an abundant number, since it is smaller than the sum of its proper divisors (2651164093140).

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

1302130321020 is a wasteful number, since it uses less digits than its factorization.

1302130321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6408635 (or 6408630 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1302130321020 its reverse (201230312031), we get a palindrome (1503360633051).

The spelling of 1302130321020 in words is "one trillion, three hundred two billion, one hundred thirty million, three hundred twenty-one thousand, twenty".