33013210021 has 16 divisors (see below), whose sum is σ = 36245314368. Its totient is φ = 29820067200.

The previous prime is 33013210001. The next prime is 33013210033. The reversal of 33013210021 is 12001231033.

It is not a de Polignac number, because 33013210021 - 2¹¹ = 33013207973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33013209977 and 33013210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33013210001) 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, 1420531 + ... + 1443583.

It is an arithmetic number, because the mean of its divisors is an integer number (2265332148).

Almost surely, 2^33013210021 is an apocalyptic number.

It is an amenable number.

33013210021 is a deficient number, since it is larger than the sum of its proper divisors (3232104347).

33013210021 is a wasteful number, since it uses less digits than its factorization.

33013210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23892.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 33013210021 its reverse (12001231033), we get a palindrome (45014441054).

The spelling of 33013210021 in words is "thirty-three billion, thirteen million, two hundred ten thousand, twenty-one".