21033130302030 has 128 divisors (see below), whose sum is σ = 62938905845760. Its totient is φ = 4370283815040.

The previous prime is 21033130302017. The next prime is 21033130302043. The reversal of 21033130302030 is 3020303133012.

It is an interprime number because it is at equal distance from previous prime (21033130302017) and next prime (21033130302043).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 21033130301988 and 21033130302006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44131141 + ... + 44605199.

It is an arithmetic number, because the mean of its divisors is an integer number (491710201920).

Almost surely, 2^{21033130302030} is an apocalyptic number.

21033130302030 is an abundant number, since it is smaller than the sum of its proper divisors (41905775543730).

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

21033130302030 is a wasteful number, since it uses less digits than its factorization.

21033130302030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493294.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21033130302030 its reverse (3020303133012), we get a palindrome (24053433435042).

The spelling of 21033130302030 in words is "twenty-one trillion, thirty-three billion, one hundred thirty million, three hundred two thousand, thirty".