121312033 has 4 divisors (see below), whose sum is σ = 121342768. Its totient is φ = 121281300.

The previous prime is 121312013. The next prime is 121312039. The reversal of 121312033 is 330213121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 330213121 = 7 ⋅47173303.

It is a cyclic number.

It is not a de Polignac number, because 121312033 - 2⁵ = 121312001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121311998 and 121312016.

It is not an unprimeable number, because it can be changed into a prime (121312039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8391 + ... + 17692.

It is an arithmetic number, because the mean of its divisors is an integer number (30335692).

Almost surely, 2^121312033 is an apocalyptic number.

It is an amenable number.

121312033 is a deficient number, since it is larger than the sum of its proper divisors (30735).

121312033 is an equidigital number, since it uses as much as digits as its factorization.

121312033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30734.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 121312033 is about 11014.1741860205. The cubic root of 121312033 is about 495.0335426034.

Adding to 121312033 its reverse (330213121), we get a palindrome (451525154).

The spelling of 121312033 in words is "one hundred twenty-one million, three hundred twelve thousand, thirty-three".