21033101433 has 64 divisors (see below), whose sum is σ = 30711840768. Its totient is φ = 12765096960.

The previous prime is 21033101431. The next prime is 21033101449. The reversal of 21033101433 is 33410133012.

It is not a de Polignac number, because 21033101433 - 2¹ = 21033101431 is a prime.

It is a super-3 number, since 3×21033101433³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21033101431) 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 63 ways as a sum of consecutive naturals, for example, 41815060 + ... + 41815562.

It is an arithmetic number, because the mean of its divisors is an integer number (479872512).

Almost surely, 2^21033101433 is an apocalyptic number.

21033101433 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21033101433 is a deficient number, since it is larger than the sum of its proper divisors (9678739335).

21033101433 is a wasteful number, since it uses less digits than its factorization.

21033101433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21033101433 its reverse (33410133012), we get a palindrome (54443234445).

The spelling of 21033101433 in words is "twenty-one billion, thirty-three million, one hundred one thousand, four hundred thirty-three".