33213020011 has 4 divisors (see below), whose sum is σ = 33455450952. Its totient is φ = 32970589072.

The previous prime is 33213019999. The next prime is 33213020107. The reversal of 33213020011 is 11002031233.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33213020011 - 2⁷ = 33213019883 is a prime.

It is a super-2 number, since 2×33213020011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33213021011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121215265 + ... + 121215538.

It is an arithmetic number, because the mean of its divisors is an integer number (8363862738).

Almost surely, 2^33213020011 is an apocalyptic number.

33213020011 is a deficient number, since it is larger than the sum of its proper divisors (242430941).

33213020011 is a wasteful number, since it uses less digits than its factorization.

33213020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242430940.

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

Adding to 33213020011 its reverse (11002031233), we get a palindrome (44215051244).

The spelling of 33213020011 in words is "thirty-three billion, two hundred thirteen million, twenty thousand, eleven".