21220100002 has 8 divisors (see below), whose sum is σ = 31862933712. Its totient is φ = 10599122100.

The previous prime is 21220099991. The next prime is 21220100021. The reversal of 21220100002 is 20000102212.

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

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, 5461524 + ... + 5465407.

It is an arithmetic number, because the mean of its divisors is an integer number (3982866714).

Almost surely, 2^21220100002 is an apocalyptic number.

21220100002 is a deficient number, since it is larger than the sum of its proper divisors (10642833710).

21220100002 is a wasteful number, since it uses less digits than its factorization.

21220100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10927904.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21220100002 its reverse (20000102212), we get a palindrome (41220202214).

The spelling of 21220100002 in words is "twenty-one billion, two hundred twenty million, one hundred thousand, two".