21301132302021 has 64 divisors (see below), whose sum is σ = 34518753674496. Its totient is φ = 11510010316800.

The previous prime is 21301132302013. The next prime is 21301132302053. The reversal of 21301132302021 is 12020323110312.

It is not a de Polignac number, because 21301132302021 - 2³ = 21301132302013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301132302071) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2723110 + ... + 7072311.

It is an arithmetic number, because the mean of its divisors is an integer number (539355526164).

Almost surely, 2^{21301132302021} is an apocalyptic number.

It is an amenable number.

21301132302021 is a deficient number, since it is larger than the sum of its proper divisors (13217621372475).

21301132302021 is a wasteful number, since it uses less digits than its factorization.

21301132302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9795622.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21301132302021 its reverse (12020323110312), we get a palindrome (33321455412333).

The spelling of 21301132302021 in words is "twenty-one trillion, three hundred one billion, one hundred thirty-two million, three hundred two thousand, twenty-one".