21202333030021 has 8 divisors (see below), whose sum is σ = 24909034608864. Its totient is φ = 17792167577520.

The previous prime is 21202333029989. The next prime is 21202333030027. The reversal of 21202333030021 is 12003033320212.

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

It is a cyclic number.

It is not a de Polignac number, because 21202333030021 - 2⁵ = 21202333029989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21202333029974 and 21202333030001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202333030027) 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, 74134031431 + ... + 74134031716.

It is an arithmetic number, because the mean of its divisors is an integer number (3113629326108).

Almost surely, 2^{21202333030021} is an apocalyptic number.

It is an amenable number.

21202333030021 is a deficient number, since it is larger than the sum of its proper divisors (3706701578843).

21202333030021 is a wasteful number, since it uses less digits than its factorization.

21202333030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148268063171.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21202333030021 its reverse (12003033320212), we get a palindrome (33205366350233).

The spelling of 21202333030021 in words is "twenty-one trillion, two hundred two billion, three hundred thirty-three million, thirty thousand, twenty-one".