21334000401 has 40 divisors (see below), whose sum is σ = 36477809984. Its totient is φ = 12172200480.

The previous prime is 21334000399. The next prime is 21334000411. The reversal of 21334000401 is 10400043312.

It is not a de Polignac number, because 21334000401 - 2¹ = 21334000399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21334000411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 346326 + ... + 403248.

Almost surely, 2^21334000401 is an apocalyptic number.

21334000401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21334000401 is a deficient number, since it is larger than the sum of its proper divisors (15143809583).

21334000401 is an equidigital number, since it uses as much as digits as its factorization.

21334000401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57603 (or 57594 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21334000401 its reverse (10400043312), we get a palindrome (31734043713).

The spelling of 21334000401 in words is "twenty-one billion, three hundred thirty-four million, four hundred one", and thus it is an aban number.