21021232030133 has 16 divisors (see below), whose sum is σ = 21187924181760. Its totient is φ = 20855046329856.

The previous prime is 21021232030111. The next prime is 21021232030171. The reversal of 21021232030133 is 33103023212012.

It is a cyclic number.

It is not a de Polignac number, because 21021232030133 - 2²⁰ = 21021230981557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21021232030099 and 21021232030108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021232030033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364309541 + ... + 364367237.

It is an arithmetic number, because the mean of its divisors is an integer number (1324245261360).

Almost surely, 2^{21021232030133} is an apocalyptic number.

It is an amenable number.

21021232030133 is a deficient number, since it is larger than the sum of its proper divisors (166692151627).

21021232030133 is a wasteful number, since it uses less digits than its factorization.

21021232030133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62036.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21021232030133 its reverse (33103023212012), we get a palindrome (54124255242145).

The spelling of 21021232030133 in words is "twenty-one trillion, twenty-one billion, two hundred thirty-two million, thirty thousand, one hundred thirty-three".