21201102302 has 8 divisors (see below), whose sum is σ = 31869752616. Its totient is φ = 10577851432.

The previous prime is 21201102289. The next prime is 21201102331. The reversal of 21201102302 is 20320110212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11348693 + ... + 11350560.

It is an arithmetic number, because the mean of its divisors is an integer number (3983719077).

Almost surely, 2^21201102302 is an apocalyptic number.

21201102302 is a deficient number, since it is larger than the sum of its proper divisors (10668650314).

21201102302 is a wasteful number, since it uses less digits than its factorization.

21201102302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22699722.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21201102302 its reverse (20320110212), we get a palindrome (41521212514).

The spelling of 21201102302 in words is "twenty-one billion, two hundred one million, one hundred two thousand, three hundred two".