21020033130101 has 8 divisors (see below), whose sum is σ = 21129902519424. Its totient is φ = 20910173610240.

The previous prime is 21020033130043. The next prime is 21020033130113. The reversal of 21020033130101 is 10103133002012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21020033130101 is a prime.

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 21020033130101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020033130601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1822820 + ... + 6735186.

It is an arithmetic number, because the mean of its divisors is an integer number (2641237814928).

Almost surely, 2^{21020033130101} is an apocalyptic number.

It is an amenable number.

21020033130101 is a deficient number, since it is larger than the sum of its proper divisors (109869389323).

21020033130101 is a wasteful number, since it uses less digits than its factorization.

21020033130101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4934731.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21020033130101 its reverse (10103133002012), we get a palindrome (31123166132113).

The spelling of 21020033130101 in words is "twenty-one trillion, twenty billion, thirty-three million, one hundred thirty thousand, one hundred one".