121813033 has 2 divisors, whose sum is σ = 121813034. Its totient is φ = 121813032.

The previous prime is 121812989. The next prime is 121813051. The reversal of 121813033 is 330318121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121616784 + 196249 = 11028^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 121813033 - 2²¹ = 119715881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121812995 and 121813013.

It is not a weakly prime, because it can be changed into another prime (121813093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60906516 + 60906517.

It is an arithmetic number, because the mean of its divisors is an integer number (60906517).

Almost surely, 2^121813033 is an apocalyptic number.

It is an amenable number.

121813033 is a deficient number, since it is larger than the sum of its proper divisors (1).

121813033 is an equidigital number, since it uses as much as digits as its factorization.

121813033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 121813033 is about 11036.8941736342. The cubic root of 121813033 is about 495.7140773727.

The spelling of 121813033 in words is "one hundred twenty-one million, eight hundred thirteen thousand, thirty-three".