21202100222 has 8 divisors (see below), whose sum is σ = 33673923936. Its totient is φ = 9977458912.

The previous prime is 21202100207. The next prime is 21202100267. The reversal of 21202100222 is 22200120212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21202100197 and 21202100206.

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, 311795558 + ... + 311795625.

It is an arithmetic number, because the mean of its divisors is an integer number (4209240492).

Almost surely, 2^21202100222 is an apocalyptic number.

21202100222 is a deficient number, since it is larger than the sum of its proper divisors (12471823714).

21202100222 is a wasteful number, since it uses less digits than its factorization.

21202100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623591202.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21202100222 its reverse (22200120212), we get a palindrome (43402220434).

The spelling of 21202100222 in words is "twenty-one billion, two hundred two million, one hundred thousand, two hundred twenty-two".