21422223001 has 2 divisors, whose sum is σ = 21422223002. Its totient is φ = 21422223000.

The previous prime is 21422222929. The next prime is 21422223029. The reversal of 21422223001 is 10032222412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19577606400 + 1844616601 = 139920^2 + 42949^2 .

It is a cyclic number.

It is not a de Polignac number, because 21422223001 - 2¹³ = 21422214809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21422223001.

It is not a weakly prime, because it can be changed into another prime (21422223061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711111500 + 10711111501.

It is an arithmetic number, because the mean of its divisors is an integer number (10711111501).

Almost surely, 2^21422223001 is an apocalyptic number.

It is an amenable number.

21422223001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21422223001 is an equidigital number, since it uses as much as digits as its factorization.

21422223001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21422223001 its reverse (10032222412), we get a palindrome (31454445413).

The spelling of 21422223001 in words is "twenty-one billion, four hundred twenty-two million, two hundred twenty-three thousand, one".