21222111002 has 16 divisors (see below), whose sum is σ = 32196271392. Its totient is φ = 10490425680.

The previous prime is 21222110981. The next prime is 21222111013. The reversal of 21222111002 is 20011122212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4088 + ... + 206060.

It is an arithmetic number, because the mean of its divisors is an integer number (2012266962).

Almost surely, 2^21222111002 is an apocalyptic number.

21222111002 is a deficient number, since it is larger than the sum of its proper divisors (10974160390).

21222111002 is a wasteful number, since it uses less digits than its factorization.

21222111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202573.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21222111002 its reverse (20011122212), we get a palindrome (41233233214).

The spelling of 21222111002 in words is "twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, two".