20111121234001 has 4 divisors (see below), whose sum is σ = 22984138553152. Its totient is φ = 17238103914852.

The previous prime is 20111121233963. The next prime is 20111121234011. The reversal of 20111121234001 is 10043212111102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20111121234001 - 2¹⁷ = 20111121102929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20111121234001.

It is not an unprimeable number, because it can be changed into a prime (20111121234011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1436508659565 + ... + 1436508659578.

It is an arithmetic number, because the mean of its divisors is an integer number (5746034638288).

Almost surely, 2^{20111121234001} is an apocalyptic number.

It is an amenable number.

20111121234001 is a deficient number, since it is larger than the sum of its proper divisors (2873017319151).

20111121234001 is an equidigital number, since it uses as much as digits as its factorization.

20111121234001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873017319150.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 20111121234001 its reverse (10043212111102), we get a palindrome (30154333345103).

The spelling of 20111121234001 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-one million, two hundred thirty-four thousand, one".