90600220121 has 8 divisors (see below), whose sum is σ = 96348555720. Its totient is φ = 84898430208.

The previous prime is 90600220093. The next prime is 90600220153. The reversal of 90600220121 is 12102200609.

It can be written as a sum of positive squares in 4 ways, for example, as 19268493721 + 71331726400 = 138811^2 + 267080^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90600220121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90600220421) 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, 11632406 + ... + 11640191.

It is an arithmetic number, because the mean of its divisors is an integer number (12043569465).

Almost surely, 2^90600220121 is an apocalyptic number.

It is an amenable number.

90600220121 is a deficient number, since it is larger than the sum of its proper divisors (5748335599).

90600220121 is a wasteful number, since it uses less digits than its factorization.

90600220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23272843.

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

The spelling of 90600220121 in words is "ninety billion, six hundred million, two hundred twenty thousand, one hundred twenty-one".