33011212021 has 8 divisors (see below), whose sum is σ = 33636777984. Its totient is φ = 32385746640.

The previous prime is 33011211973. The next prime is 33011212027. The reversal of 33011212021 is 12021211033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33011212021 - 2⁹ = 33011211509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33011211986 and 33011212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33011212027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1166380 + ... + 1194346.

It is an arithmetic number, because the mean of its divisors is an integer number (4204597248).

Almost surely, 2^33011212021 is an apocalyptic number.

It is an amenable number.

33011212021 is a deficient number, since it is larger than the sum of its proper divisors (625565963).

33011212021 is a wasteful number, since it uses less digits than its factorization.

33011212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50291.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 33011212021 its reverse (12021211033), we get a palindrome (45032423054).

The spelling of 33011212021 in words is "thirty-three billion, eleven million, two hundred twelve thousand, twenty-one".