20110220010191 has 8 divisors (see below), whose sum is σ = 20217359579904. Its totient is φ = 20003099716480.

The previous prime is 20110220010187. The next prime is 20110220010193. The reversal of 20110220010191 is 19101002201102.

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 20110220010191 - 2² = 20110220010187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110220010193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2724470 + ... + 6902403.

It is an arithmetic number, because the mean of its divisors is an integer number (2527169947488).

Almost surely, 2^{20110220010191} is an apocalyptic number.

20110220010191 is a deficient number, since it is larger than the sum of its proper divisors (107139569713).

20110220010191 is a wasteful number, since it uses less digits than its factorization.

20110220010191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9638001.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 20110220010191 its reverse (19101002201102), we get a palindrome (39211222211293).

The spelling of 20110220010191 in words is "twenty trillion, one hundred ten billion, two hundred twenty million, ten thousand, one hundred ninety-one".