20001121220095 has 8 divisors (see below), whose sum is σ = 24221541294720. Its totient is φ = 15854099755680.

The previous prime is 20001121220023. The next prime is 20001121220099. The reversal of 20001121220095 is 59002212110002.

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

It is not a de Polignac number, because 20001121220095 - 2¹⁹ = 20001120695807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001121220099) 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, 18349651951 + ... + 18349653040.

It is an arithmetic number, because the mean of its divisors is an integer number (3027692661840).

Almost surely, 2^{20001121220095} is an apocalyptic number.

20001121220095 is a deficient number, since it is larger than the sum of its proper divisors (4220420074625).

20001121220095 is a wasteful number, since it uses less digits than its factorization.

20001121220095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36699305105.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 20001121220095 its reverse (59002212110002), we get a palindrome (79003333330097).

The spelling of 20001121220095 in words is "twenty trillion, one billion, one hundred twenty-one million, two hundred twenty thousand, ninety-five".