21334202001 has 24 divisors (see below), whose sum is σ = 35262636864. Its totient is φ = 12175647840.

The previous prime is 21334201997. The next prime is 21334202011. The reversal of 21334202001 is 10020243312.

It is not a de Polignac number, because 21334202001 - 2² = 21334201997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21334202011) 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 23 ways as a sum of consecutive naturals, for example, 162235 + ... + 262656.

It is an arithmetic number, because the mean of its divisors is an integer number (1469276536).

Almost surely, 2^21334202001 is an apocalyptic number.

21334202001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21334202001 is a deficient number, since it is larger than the sum of its proper divisors (13928434863).

21334202001 is a wasteful number, since it uses less digits than its factorization.

21334202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425701 (or 425698 counting only the distinct ones).

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

Adding to 21334202001 its reverse (10020243312), we get a palindrome (31354445313).

The spelling of 21334202001 in words is "twenty-one billion, three hundred thirty-four million, two hundred two thousand, one".