33213333011 has 4 divisors (see below), whose sum is σ = 34657390992. Its totient is φ = 31769275032.

The previous prime is 33213333001. The next prime is 33213333031. The reversal of 33213333011 is 11033331233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11033331233 = 53 ⋅208176061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33213333011 is a prime.

It is a super-2 number, since 2×33213333011² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1444057957 = 33213333011 / (3 + 3 + 2 + 1 + 3 + 3 + 3 + 3 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33213333001) 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, 722028956 + ... + 722029001.

It is an arithmetic number, because the mean of its divisors is an integer number (8664347748).

Almost surely, 2^33213333011 is an apocalyptic number.

33213333011 is a deficient number, since it is larger than the sum of its proper divisors (1444057981).

33213333011 is a wasteful number, since it uses less digits than its factorization.

33213333011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444057980.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 33213333011 its reverse (11033331233), we get a palindrome (44246664244).

The spelling of 33213333011 in words is "thirty-three billion, two hundred thirteen million, three hundred thirty-three thousand, eleven".