21002205301 has 16 divisors (see below), whose sum is σ = 26189291520. Its totient is φ = 16362402480.

The previous prime is 21002205299. The next prime is 21002205307. The reversal of 21002205301 is 10350220012.

It is a cyclic number.

It is not a de Polignac number, because 21002205301 - 2¹ = 21002205299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002205307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468840 + ... + 511678.

It is an arithmetic number, because the mean of its divisors is an integer number (1636830720).

Almost surely, 2^21002205301 is an apocalyptic number.

It is an amenable number.

21002205301 is a deficient number, since it is larger than the sum of its proper divisors (5187086219).

21002205301 is a wasteful number, since it uses less digits than its factorization.

21002205301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49224.

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 21002205301 its reverse (10350220012), we get a palindrome (31352425313).

The spelling of 21002205301 in words is "twenty-one billion, two million, two hundred five thousand, three hundred one".