21344101033 has 8 divisors (see below), whose sum is σ = 21623459400. Its totient is φ = 21066076800.

The previous prime is 21344101019. The next prime is 21344101057. The reversal of 21344101033 is 33010144312.

It can be written as a sum of positive squares in 4 ways, for example, as 387774864 + 20956326169 = 19692^2 + 144763^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21344101033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21344100995 and 21344101013.

It is not an unprimeable number, because it can be changed into a prime (21344101073) 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, 301308 + ... + 365341.

It is an arithmetic number, because the mean of its divisors is an integer number (2702932425).

Almost surely, 2^21344101033 is an apocalyptic number.

It is an amenable number.

21344101033 is a deficient number, since it is larger than the sum of its proper divisors (279358367).

21344101033 is a wasteful number, since it uses less digits than its factorization.

21344101033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667067.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21344101033 its reverse (33010144312), we get a palindrome (54354245345).

The spelling of 21344101033 in words is "twenty-one billion, three hundred forty-four million, one hundred one thousand, thirty-three".