201121221099999 has 8 divisors (see below), whose sum is σ = 268162562677680. Its totient is φ = 134080346794496.

The previous prime is 201121221099971. The next prime is 201121221100049. The reversal of 201121221099999 is 999990122121102.

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 201121221099999 - 2¹² = 201121221095903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121221099919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115812504 + ... + 117536285.

It is an arithmetic number, because the mean of its divisors is an integer number (33520320334710).

Almost surely, 2^{201121221099999} is an apocalyptic number.

201121221099999 is a deficient number, since it is larger than the sum of its proper divisors (67041341577681).

201121221099999 is a wasteful number, since it uses less digits than its factorization.

201121221099999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233636089.

The product of its (nonzero) digits is 944784, while the sum is 57.

The spelling of 201121221099999 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred twenty-one million, ninety-nine thousand, nine hundred ninety-nine".