21222000222001 has 8 divisors (see below), whose sum is σ = 21299676911744. Its totient is φ = 21144331180080.

The previous prime is 21222000221941. The next prime is 21222000222019. The reversal of 21222000222001 is 10022200022212.

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 21222000222001 - 2⁹ = 21222000221489 is a prime.

It is a super-2 number, since 2×21222000222001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222000222041) 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, 3677866 + ... + 7481356.

It is an arithmetic number, because the mean of its divisors is an integer number (2662459613968).

Almost surely, 2^{21222000222001} is an apocalyptic number.

It is an amenable number.

21222000222001 is a deficient number, since it is larger than the sum of its proper divisors (77676689743).

21222000222001 is a wasteful number, since it uses less digits than its factorization.

21222000222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823911.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21222000222001 its reverse (10022200022212), we get a palindrome (31244200244213).

The spelling of 21222000222001 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty-two thousand, one".