21222201110002 has 16 divisors (see below), whose sum is σ = 33510909916800. Its totient is φ = 10051970181840.

The previous prime is 21222201109933. The next prime is 21222201110023. The reversal of 21222201110002 is 20001110222212.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17499949 + ... + 18673312.

It is an arithmetic number, because the mean of its divisors is an integer number (2094431869800).

Almost surely, 2^{21222201110002} is an apocalyptic number.

21222201110002 is a deficient number, since it is larger than the sum of its proper divisors (12288708806798).

21222201110002 is a wasteful number, since it uses less digits than its factorization.

21222201110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36188721.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21222201110002 its reverse (20001110222212), we get a palindrome (41223311332214).

The spelling of 21222201110002 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred one million, one hundred ten thousand, two".