21222102001 has 8 divisors (see below), whose sum is σ = 22156199424. Its totient is φ = 20288954400.

The previous prime is 21222101987. The next prime is 21222102023. The reversal of 21222102001 is 10020122212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21222102001 - 2⁵ = 21222101969 is a prime.

It is a super-2 number, since 2×21222102001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222102061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191596 + ... + 281341.

It is an arithmetic number, because the mean of its divisors is an integer number (2769524928).

Almost surely, 2^21222102001 is an apocalyptic number.

It is an amenable number.

21222102001 is a deficient number, since it is larger than the sum of its proper divisors (934097423).

21222102001 is a wasteful number, since it uses less digits than its factorization.

21222102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474911.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21222102001 its reverse (10020122212), we get a palindrome (31242224213).

The spelling of 21222102001 in words is "twenty-one billion, two hundred twenty-two million, one hundred two thousand, one".