21201102221102 has 8 divisors (see below), whose sum is σ = 31828310211456. Its totient is φ = 10591665483952.

The previous prime is 21201102221051. The next prime is 21201102221161. The reversal of 21201102221102 is 20112220110212.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4442810318 + ... + 4442815089.

It is an arithmetic number, because the mean of its divisors is an integer number (3978538776432).

Almost surely, 2^{21201102221102} is an apocalyptic number.

21201102221102 is a deficient number, since it is larger than the sum of its proper divisors (10627207990354).

21201102221102 is a wasteful number, since it uses less digits than its factorization.

21201102221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8885626602.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21201102221102 its reverse (20112220110212), we get a palindrome (41313322331314).

The spelling of 21201102221102 in words is "twenty-one trillion, two hundred one billion, one hundred two million, two hundred twenty-one thousand, one hundred two".