33131044121 has 4 divisors (see below), whose sum is σ = 37864050432. Its totient is φ = 28398037812.

The previous prime is 33131044081. The next prime is 33131044213. The reversal of 33131044121 is 12144013133.

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 33131044121 - 2³⁰ = 32057302297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33131044321) 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, 2366503145 + ... + 2366503158.

It is an arithmetic number, because the mean of its divisors is an integer number (9466012608).

Almost surely, 2^33131044121 is an apocalyptic number.

It is an amenable number.

33131044121 is a deficient number, since it is larger than the sum of its proper divisors (4733006311).

33131044121 is an equidigital number, since it uses as much as digits as its factorization.

33131044121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733006310.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 33131044121 its reverse (12144013133), we get a palindrome (45275057254).

The spelling of 33131044121 in words is "thirty-three billion, one hundred thirty-one million, forty-four thousand, one hundred twenty-one".