9121004213 has 4 divisors (see below), whose sum is σ = 9135102240. Its totient is φ = 9106906188.

The previous prime is 9121004161. The next prime is 9121004227. The reversal of 9121004213 is 3124001219.

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 9121004213 - 2¹⁰ = 9121003189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121504213) 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, 7048043 + ... + 7049336.

It is an arithmetic number, because the mean of its divisors is an integer number (2283775560).

Almost surely, 2^9121004213 is an apocalyptic number.

It is an amenable number.

9121004213 is a deficient number, since it is larger than the sum of its proper divisors (14098027).

9121004213 is a wasteful number, since it uses less digits than its factorization.

9121004213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14098026.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 9121004213 is about 95503.9486775285. The cubic root of 9121004213 is about 2089.3645354071.

The spelling of 9121004213 in words is "nine billion, one hundred twenty-one million, four thousand, two hundred thirteen".