21201101301 has 4 divisors (see below), whose sum is σ = 28268135072. Its totient is φ = 14134067532.

The previous prime is 21201101293. The next prime is 21201101321. The reversal of 21201101301 is 10310110212.

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 not a de Polignac number, because 21201101301 - 2³ = 21201101293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201101321) 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, 3533516881 + ... + 3533516886.

It is an arithmetic number, because the mean of its divisors is an integer number (7067033768).

Almost surely, 2^21201101301 is an apocalyptic number.

It is an amenable number.

21201101301 is a deficient number, since it is larger than the sum of its proper divisors (7067033771).

21201101301 is an equidigital number, since it uses as much as digits as its factorization.

21201101301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7067033770.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21201101301 its reverse (10310110212), we get a palindrome (31511211513).

The spelling of 21201101301 in words is "twenty-one billion, two hundred one million, one hundred one thousand, three hundred one".