20030033330021 has 16 divisors (see below), whose sum is σ = 23532357219840. Its totient is φ = 16808012569920.

The previous prime is 20030033330017. The next prime is 20030033330071. The reversal of 20030033330021 is 12003333003002.

It is not a de Polignac number, because 20030033330021 - 2² = 20030033330017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20030033329975 and 20030033330002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030033330011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4304300 + ... + 7654218.

It is an arithmetic number, because the mean of its divisors is an integer number (1470772326240).

Almost surely, 2^{20030033330021} is an apocalyptic number.

It is an amenable number.

20030033330021 is a deficient number, since it is larger than the sum of its proper divisors (3502323889819).

20030033330021 is a wasteful number, since it uses less digits than its factorization.

20030033330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391756.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 20030033330021 its reverse (12003333003002), we get a palindrome (32033366333023).

The spelling of 20030033330021 in words is "twenty trillion, thirty billion, thirty-three million, three hundred thirty thousand, twenty-one".