20112101221001 has 8 divisors (see below), whose sum is σ = 20133940298304. Its totient is φ = 20090263414320.

The previous prime is 20112101220977. The next prime is 20112101221099. The reversal of 20112101221001 is 10012210121102.

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-20112101221001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112101221501) 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, 33282116 + ... + 33881018.

It is an arithmetic number, because the mean of its divisors is an integer number (2516742537288).

Almost surely, 2^{20112101221001} is an apocalyptic number.

It is an amenable number.

20112101221001 is a deficient number, since it is larger than the sum of its proper divisors (21839077303).

20112101221001 is an equidigital number, since it uses as much as digits as its factorization.

20112101221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635311.

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

Adding to 20112101221001 its reverse (10012210121102), we get a palindrome (30124311342103).

The spelling of 20112101221001 in words is "twenty trillion, one hundred twelve billion, one hundred one million, two hundred twenty-one thousand, one".