33121011010121 has 4 divisors (see below), whose sum is σ = 34016173469892. Its totient is φ = 32225848550352.

The previous prime is 33121011010097. The next prime is 33121011010147. The reversal of 33121011010121 is 12101011012133.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25718448824896 + 7402562185225 = 5071336^2 + 2720765^2 .

It is a cyclic number.

It is not a de Polignac number, because 33121011010121 - 2¹⁴ = 33121010993737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33121011010121.

It is not an unprimeable number, because it can be changed into a prime (33121011010721) 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, 447581229830 + ... + 447581229903.

It is an arithmetic number, because the mean of its divisors is an integer number (8504043367473).

Almost surely, 2^{33121011010121} is an apocalyptic number.

It is an amenable number.

33121011010121 is a deficient number, since it is larger than the sum of its proper divisors (895162459771).

33121011010121 is an equidigital number, since it uses as much as digits as its factorization.

33121011010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895162459770.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 33121011010121 its reverse (12101011012133), we get a palindrome (45222022022254).

The spelling of 33121011010121 in words is "thirty-three trillion, one hundred twenty-one billion, eleven million, ten thousand, one hundred twenty-one".