21222102002 has 8 divisors (see below), whose sum is σ = 31905667200. Its totient is φ = 10586879604.

The previous prime is 21222101987. The next prime is 21222102023. The reversal of 21222102002 is 20020122212.

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

It is a super-2 number, since 2×21222102002² (a number of 21 digits) contains 22 as substring.

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, 12084602 + ... + 12086357.

It is an arithmetic number, because the mean of its divisors is an integer number (3988208400).

Almost surely, 2^21222102002 is an apocalyptic number.

21222102002 is a deficient number, since it is larger than the sum of its proper divisors (10683565198).

21222102002 is a wasteful number, since it uses less digits than its factorization.

21222102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24171400.

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

Adding to 21222102002 its reverse (20020122212), we get a palindrome (41242224214).

It can be divided in two parts, 2122210 and 2002, that added together give a palindrome (2124212).

The spelling of 21222102002 in words is "twenty-one billion, two hundred twenty-two million, one hundred two thousand, two".