30013021321020 has 120 divisors (see below), whose sum is σ = 94153406978400. Its totient is φ = 8003349307008.

The previous prime is 30013021321001. The next prime is 30013021321037. The reversal of 30013021321020 is 2012312031003.

30013021321020 is a `hidden beast` number, since 300 + 1 + 3 + 0 + 21 + 321 + 0 + 20 = 666.

It is a super-2 number, since 2×30013021321020² (a number of 28 digits) contains 22 as substring.

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 = 30013021320984 and 30013021321002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 162748626 + ... + 162932934.

It is an arithmetic number, because the mean of its divisors is an integer number (784611724820).

Almost surely, 2^{30013021321020} is an apocalyptic number.

30013021321020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30013021321020 is an abundant number, since it is smaller than the sum of its proper divisors (64140385657380).

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

30013021321020 is a wasteful number, since it uses less digits than its factorization.

30013021321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284849 (or 284838 counting only the distinct ones).

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

Adding to 30013021321020 its reverse (2012312031003), we get a palindrome (32025333352023).

The spelling of 30013021321020 in words is "thirty trillion, thirteen billion, twenty-one million, three hundred twenty-one thousand, twenty".