21222201002 has 8 divisors (see below), whose sum is σ = 32148483012. Its totient is φ = 10506040000.

The previous prime is 21222200983. The next prime is 21222201047. The reversal of 21222201002 is 20010222212.

It can be written as a sum of positive squares in 2 ways, for example, as 14692106521 + 6530094481 = 121211^2 + 80809^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52529999 + ... + 52530402.

Almost surely, 2^21222201002 is an apocalyptic number.

21222201002 is a deficient number, since it is larger than the sum of its proper divisors (10926282010).

21222201002 is a wasteful number, since it uses less digits than its factorization.

21222201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105060504.

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

Adding to 21222201002 its reverse (20010222212), we get a palindrome (41232423214).

The spelling of 21222201002 in words is "twenty-one billion, two hundred twenty-two million, two hundred one thousand, two".