21020303332201 has 4 divisors (see below), whose sum is σ = 21100228440192. Its totient is φ = 20940378224212.

The previous prime is 21020303332183. The next prime is 21020303332241. The reversal of 21020303332201 is 10223330302012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21020303332201 - 2²¹ = 21020301235049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020303332241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39962553601 + ... + 39962554126.

It is an arithmetic number, because the mean of its divisors is an integer number (5275057110048).

Almost surely, 2^{21020303332201} is an apocalyptic number.

It is an amenable number.

21020303332201 is a deficient number, since it is larger than the sum of its proper divisors (79925107991).

21020303332201 is an equidigital number, since it uses as much as digits as its factorization.

21020303332201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79925107990.

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

Adding to 21020303332201 its reverse (10223330302012), we get a palindrome (31243633634213).

The spelling of 21020303332201 in words is "twenty-one trillion, twenty billion, three hundred three million, three hundred thirty-two thousand, two hundred one".