20011101221201 has 8 divisors (see below), whose sum is σ = 20350346545440. Its totient is φ = 19671858367648.

The previous prime is 20011101221141. The next prime is 20011101221207. The reversal of 20011101221201 is 10212210111002.

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-20011101221201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011101221207) 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, 23893205 + ... + 24716541.

It is an arithmetic number, because the mean of its divisors is an integer number (2543793318180).

Almost surely, 2^{20011101221201} is an apocalyptic number.

It is an amenable number.

20011101221201 is a deficient number, since it is larger than the sum of its proper divisors (339245324239).

20011101221201 is an equidigital number, since it uses as much as digits as its factorization.

20011101221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235343.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20011101221201 its reverse (10212210111002), we get a palindrome (30223311332203).

The spelling of 20011101221201 in words is "twenty trillion, eleven billion, one hundred one million, two hundred twenty-one thousand, two hundred one".