21222011002001 has 8 divisors (see below), whose sum is σ = 22688523471744. Its totient is φ = 19779738408000.

The previous prime is 21222011001943. The next prime is 21222011002021. The reversal of 21222011002001 is 10020011022212.

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

It is not a de Polignac number, because 21222011002001 - 2³⁰ = 21220937260177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222011002021) 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, 6059967125 + ... + 6059970626.

It is an arithmetic number, because the mean of its divisors is an integer number (2836065433968).

Almost surely, 2^{21222011002001} is an apocalyptic number.

It is an amenable number.

21222011002001 is a deficient number, since it is larger than the sum of its proper divisors (1466512469743).

21222011002001 is a wasteful number, since it uses less digits than its factorization.

21222011002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12119937871.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21222011002001 its reverse (10020011022212), we get a palindrome (31242022024213).

The spelling of 21222011002001 in words is "twenty-one trillion, two hundred twenty-two billion, eleven million, two thousand, one".