21222220220102 has 8 divisors (see below), whose sum is σ = 34727269451112. Its totient is φ = 9646463736400.

The previous prime is 21222220220099. The next prime is 21222220220129. The reversal of 21222220220102 is 20102202222212.

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, 482323186799 + ... + 482323186842.

It is an arithmetic number, because the mean of its divisors is an integer number (4340908681389).

Almost surely, 2^{21222220220102} is an apocalyptic number.

21222220220102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21222220220102 is a deficient number, since it is larger than the sum of its proper divisors (13505049231010).

21222220220102 is a wasteful number, since it uses less digits than its factorization.

21222220220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964646373654.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21222220220102 its reverse (20102202222212), we get a palindrome (41324422442314).

The spelling of 21222220220102 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twenty thousand, one hundred two".