220121000201005 has 8 divisors (see below), whose sum is σ = 264256139020824. Its totient is φ = 176022840974400.

The previous prime is 220121000200993. The next prime is 220121000201107. The reversal of 220121000201005 is 500102000121022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25405823695561 + 194715176505444 = 5040419^2 + 13954038^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-220121000201005 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220121000201005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9244885206 + ... + 9244909015.

It is an arithmetic number, because the mean of its divisors is an integer number (33032017377603).

Almost surely, 2^{220121000201005} is an apocalyptic number.

It is an amenable number.

220121000201005 is a deficient number, since it is larger than the sum of its proper divisors (44135138819819).

220121000201005 is a wasteful number, since it uses less digits than its factorization.

220121000201005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18489796607.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 220121000201005 its reverse (500102000121022), we get a palindrome (720223000322027).

The spelling of 220121000201005 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred one thousand, five".