90221412209 has 16 divisors (see below), whose sum is σ = 93405919824. Its totient is φ = 87085056000.

The previous prime is 90221412187. The next prime is 90221412271.

90221412209 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 53333809 + 90168078400 = 7303^2 + 300280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90221412209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90221412409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6175217 + ... + 6189809.

It is an arithmetic number, because the mean of its divisors is an integer number (5837869989).

Almost surely, 2^90221412209 is an apocalyptic number.

It is an amenable number.

90221412209 is a deficient number, since it is larger than the sum of its proper divisors (3184507615).

90221412209 is a wasteful number, since it uses less digits than its factorization.

90221412209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16228.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 90221412209 in words is "ninety billion, two hundred twenty-one million, four hundred twelve thousand, two hundred nine".