21322000001 has 4 divisors (see below), whose sum is σ = 21541814532. Its totient is φ = 21102185472.

The previous prime is 21321999997. The next prime is 21322000003. The reversal of 21322000001 is 10000022312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6922240000 + 14399760001 = 83200^2 + 119999^2 .

It is a cyclic number.

It is not a de Polignac number, because 21322000001 - 2² = 21321999997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21322000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109907120 + ... + 109907313.

It is an arithmetic number, because the mean of its divisors is an integer number (5385453633).

Almost surely, 2^21322000001 is an apocalyptic number.

It is an amenable number.

21322000001 is a deficient number, since it is larger than the sum of its proper divisors (219814531).

21322000001 is an equidigital number, since it uses as much as digits as its factorization.

21322000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219814530.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 21322000001 its reverse (10000022312), we get a palindrome (31322022313).

The spelling of 21322000001 in words is "twenty-one billion, three hundred twenty-two million, one", and thus it is an aban number.