9121312201 has 4 divisors (see below), whose sum is σ = 9202031892. Its totient is φ = 9040592512.

The previous prime is 9121312183. The next prime is 9121312229. The reversal of 9121312201 is 1022131219.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3660250000 + 5461062201 = 60500^2 + 73899^2 .

It is a cyclic number.

It is not a de Polignac number, because 9121312201 - 2¹¹ = 9121310153 is a prime.

It is a super-2 number, since 2×9121312201² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9121312241) 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, 40359676 + ... + 40359901.

It is an arithmetic number, because the mean of its divisors is an integer number (2300507973).

Almost surely, 2^9121312201 is an apocalyptic number.

It is an amenable number.

9121312201 is a deficient number, since it is larger than the sum of its proper divisors (80719691).

9121312201 is a wasteful number, since it uses less digits than its factorization.

9121312201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80719690.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 9121312201 is about 95505.5610998648. The cubic root of 9121312201 is about 2089.3880522607.

The spelling of 9121312201 in words is "nine billion, one hundred twenty-one million, three hundred twelve thousand, two hundred one".