21001302201 has 24 divisors (see below), whose sum is σ = 30803885280. Its totient is φ = 12717675520.

The previous prime is 21001302193. The next prime is 21001302221. The reversal of 21001302201 is 10220310012.

It is not a de Polignac number, because 21001302201 - 2³ = 21001302193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21001302221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 434041 + ... + 479993.

It is an arithmetic number, because the mean of its divisors is an integer number (1283495220).

Almost surely, 2^21001302201 is an apocalyptic number.

It is an amenable number.

21001302201 is a deficient number, since it is larger than the sum of its proper divisors (9802583079).

21001302201 is a wasteful number, since it uses less digits than its factorization.

21001302201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47237 (or 47226 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21001302201 its reverse (10220310012), we get a palindrome (31221612213).

The spelling of 21001302201 in words is "twenty-one billion, one million, three hundred two thousand, two hundred one".