21222010111001 has 16 divisors (see below), whose sum is σ = 25817094345600. Its totient is φ = 17039282249088.

The previous prime is 21222010110979. The next prime is 21222010111063. The reversal of 21222010111001 is 10011101022212.

It is a cyclic number.

It is not a de Polignac number, because 21222010111001 - 2¹⁴ = 21222010094617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222010119001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 896415050 + ... + 896438723.

It is an arithmetic number, because the mean of its divisors is an integer number (1613568396600).

Almost surely, 2^{21222010111001} is an apocalyptic number.

It is an amenable number.

21222010111001 is a deficient number, since it is larger than the sum of its proper divisors (4595084234599).

21222010111001 is a wasteful number, since it uses less digits than its factorization.

21222010111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792853888.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21222010111001 its reverse (10011101022212), we get a palindrome (31233111133213).

The spelling of 21222010111001 in words is "twenty-one trillion, two hundred twenty-two billion, ten million, one hundred eleven thousand, one".