33131230121 has 4 divisors (see below), whose sum is σ = 36143160144. Its totient is φ = 30119300100.

The previous prime is 33131230073. The next prime is 33131230163. The reversal of 33131230121 is 12103213133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33131230121 - 2¹⁸ = 33130967977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33131230093 and 33131230102.

It is not an unprimeable number, because it can be changed into a prime (33131250121) 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, 1505964995 + ... + 1505965016.

It is an arithmetic number, because the mean of its divisors is an integer number (9035790036).

Almost surely, 2^33131230121 is an apocalyptic number.

It is an amenable number.

33131230121 is a deficient number, since it is larger than the sum of its proper divisors (3011930023).

33131230121 is a wasteful number, since it uses less digits than its factorization.

33131230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011930022.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 33131230121 its reverse (12103213133), we get a palindrome (45234443254).

The spelling of 33131230121 in words is "thirty-three billion, one hundred thirty-one million, two hundred thirty thousand, one hundred twenty-one".