33110021011 has 4 divisors (see below), whose sum is σ = 33122656224. Its totient is φ = 33097385800.

The previous prime is 33110020997. The next prime is 33110021069. The reversal of 33110021011 is 11012001133.

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 33110021011 - 2²⁷ = 32975803283 is a prime.

It is a super-2 number, since 2×33110021011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33110020982 and 33110021000.

It is not an unprimeable number, because it can be changed into a prime (33110021311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6313675 + ... + 6318916.

It is an arithmetic number, because the mean of its divisors is an integer number (8280664056).

Almost surely, 2^33110021011 is an apocalyptic number.

33110021011 is a deficient number, since it is larger than the sum of its proper divisors (12635213).

33110021011 is a wasteful number, since it uses less digits than its factorization.

33110021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12635212.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 33110021011 its reverse (11012001133), we get a palindrome (44122022144).

The spelling of 33110021011 in words is "thirty-three billion, one hundred ten million, twenty-one thousand, eleven".