21220001102 has 8 divisors (see below), whose sum is σ = 31835997336. Its totient is φ = 10608001992.

The previous prime is 21220001083. The next prime is 21220001129. The reversal of 21220001102 is 20110002212.

It is a happy number.

21220001102 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 985973 + ... + 1007264.

It is an arithmetic number, because the mean of its divisors is an integer number (3979499667).

Almost surely, 2^21220001102 is an apocalyptic number.

21220001102 is a deficient number, since it is larger than the sum of its proper divisors (10615996234).

21220001102 is a wasteful number, since it uses less digits than its factorization.

21220001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998562.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21220001102 its reverse (20110002212), we get a palindrome (41330003314).

The spelling of 21220001102 in words is "twenty-one billion, two hundred twenty million, one thousand, one hundred two".