21420000333 has 24 divisors (see below), whose sum is σ = 31252455936. Its totient is φ = 14135990400.

The previous prime is 21420000307. The next prime is 21420000337. The reversal of 21420000333 is 33300002412.

It is not a de Polignac number, because 21420000333 - 2¹⁰ = 21419999309 is a prime.

It is a super-2 number, since 2×21420000333² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21420000337) 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, 1409013 + ... + 1424133.

It is an arithmetic number, because the mean of its divisors is an integer number (1302185664).

Almost surely, 2^21420000333 is an apocalyptic number.

It is an amenable number.

21420000333 is a deficient number, since it is larger than the sum of its proper divisors (9832455603).

21420000333 is a wasteful number, since it uses less digits than its factorization.

21420000333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16705 (or 16702 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21420000333 its reverse (33300002412), we get a palindrome (54720002745).

The spelling of 21420000333 in words is "twenty-one billion, four hundred twenty million, three hundred thirty-three", and thus it is an aban number.