33011020121 has 8 divisors (see below), whose sum is σ = 35897517000. Its totient is φ = 30229486848.

The previous prime is 33011020117. The next prime is 33011020177. The reversal of 33011020121 is 12102011033.

It can be written as a sum of positive squares in 4 ways, for example, as 26153358400 + 6857661721 = 161720^2 + 82811^2 .

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 33011020121 - 2² = 33011020117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33011020096 and 33011020105.

It is not an unprimeable number, because it can be changed into a prime (33011020621) 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, 26240246 + ... + 26241503.

It is an arithmetic number, because the mean of its divisors is an integer number (4487189625).

Almost surely, 2^33011020121 is an apocalyptic number.

It is an amenable number.

33011020121 is a deficient number, since it is larger than the sum of its proper divisors (2886496879).

33011020121 is a wasteful number, since it uses less digits than its factorization.

33011020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52481803.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 33011020121 its reverse (12102011033), we get a palindrome (45113031154).

The spelling of 33011020121 in words is "thirty-three billion, eleven million, twenty thousand, one hundred twenty-one".