21002032033 has 16 divisors (see below), whose sum is σ = 23499011520. Its totient is φ = 18653331456.

The previous prime is 21002032031. The next prime is 21002032061. The reversal of 21002032033 is 33023020012.

It is a cyclic number.

It is not a de Polignac number, because 21002032033 - 2¹ = 21002032031 is a prime.

It is a super-2 number, since 2×21002032033² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21002031998 and 21002032016.

It is not an unprimeable number, because it can be changed into a prime (21002032031) 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 15 ways as a sum of consecutive naturals, for example, 43491 + ... + 209512.

It is an arithmetic number, because the mean of its divisors is an integer number (1468688220).

Almost surely, 2^21002032033 is an apocalyptic number.

It is an amenable number.

21002032033 is a deficient number, since it is larger than the sum of its proper divisors (2496979487).

21002032033 is a wasteful number, since it uses less digits than its factorization.

21002032033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253296.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21002032033 its reverse (33023020012), we get a palindrome (54025052045).

The spelling of 21002032033 in words is "twenty-one billion, two million, thirty-two thousand, thirty-three".