33220021133 has 16 divisors (see below), whose sum is σ = 37596806016. Its totient is φ = 29141985600.

The previous prime is 33220021069. The next prime is 33220021157. The reversal of 33220021133 is 33112002233.

It is not a de Polignac number, because 33220021133 - 2⁶ = 33220021069 is a prime.

It is a super-2 number, since 2×33220021133² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220011133) 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, 782393 + ... + 823758.

It is an arithmetic number, because the mean of its divisors is an integer number (2349800376).

Almost surely, 2^33220021133 is an apocalyptic number.

It is an amenable number.

33220021133 is a deficient number, since it is larger than the sum of its proper divisors (4376784883).

33220021133 is a wasteful number, since it uses less digits than its factorization.

33220021133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606244.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 33220021133 its reverse (33112002233), we get a palindrome (66332023366).

The spelling of 33220021133 in words is "thirty-three billion, two hundred twenty million, twenty-one thousand, one hundred thirty-three".