20010333121021 has 16 divisors (see below), whose sum is σ = 20099197198080. Its totient is φ = 19921605834240.

The previous prime is 20010333121003. The next prime is 20010333121033. The reversal of 20010333121021 is 12012133301002.

It is a cyclic number.

It is not a de Polignac number, because 20010333121021 - 2¹⁹ = 20010332596733 is a prime.

It is a super-2 number, since 2×20010333121021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20010333121021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010333121001) 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, 1944822645 + ... + 1944832933.

It is an arithmetic number, because the mean of its divisors is an integer number (1256199824880).

Almost surely, 2^{20010333121021} is an apocalyptic number.

It is an amenable number.

20010333121021 is a deficient number, since it is larger than the sum of its proper divisors (88864077059).

20010333121021 is a wasteful number, since it uses less digits than its factorization.

20010333121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16116.

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

Adding to 20010333121021 its reverse (12012133301002), we get a palindrome (32022466422023).

The spelling of 20010333121021 in words is "twenty trillion, ten billion, three hundred thirty-three million, one hundred twenty-one thousand, twenty-one".