21222210210202 has 8 divisors (see below), whose sum is σ = 31833381525696. Its totient is φ = 10611083034972.

The previous prime is 21222210210139. The next prime is 21222210210239. The reversal of 21222210210202 is 20201201222212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21222210210202.

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, 9805698 + ... + 11772685.

It is an arithmetic number, because the mean of its divisors is an integer number (3979172690712).

Almost surely, 2^{21222210210202} is an apocalyptic number.

21222210210202 is a deficient number, since it is larger than the sum of its proper divisors (10611171315494).

21222210210202 is a wasteful number, since it uses less digits than its factorization.

21222210210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22070132.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21222210210202 its reverse (20201201222212), we get a palindrome (41423411432414).

The spelling of 21222210210202 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred ten million, two hundred ten thousand, two hundred two".