36521541221 has 8 divisors (see below), whose sum is σ = 40145817888. Its totient is φ = 32947954000.

The previous prime is 36521541211. The next prime is 36521541247. The reversal of 36521541221 is 12214512563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36521541221 - 2⁶ = 36521541157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36521541211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12670850 + ... + 12673731.

It is an arithmetic number, because the mean of its divisors is an integer number (5018227236).

Almost surely, 2^36521541221 is an apocalyptic number.

It is an amenable number.

36521541221 is a deficient number, since it is larger than the sum of its proper divisors (3624276667).

36521541221 is a wasteful number, since it uses less digits than its factorization.

36521541221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25344723.

The product of its digits is 14400, while the sum is 32.

The spelling of 36521541221 in words is "thirty-six billion, five hundred twenty-one million, five hundred forty-one thousand, two hundred twenty-one".