20111022110001 has 4 divisors (see below), whose sum is σ = 26814696146672. Its totient is φ = 13407348073332.

The previous prime is 20111022109963. The next prime is 20111022110059. The reversal of 20111022110001 is 10001122011102.

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 not a de Polignac number, because 20111022110001 - 2⁹ = 20111022109489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111022110071) 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, 3351837018331 + ... + 3351837018336.

It is an arithmetic number, because the mean of its divisors is an integer number (6703674036668).

Almost surely, 2^{20111022110001} is an apocalyptic number.

It is an amenable number.

20111022110001 is a deficient number, since it is larger than the sum of its proper divisors (6703674036671).

20111022110001 is an equidigital number, since it uses as much as digits as its factorization.

20111022110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6703674036670.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20111022110001 its reverse (10001122011102), we get a palindrome (30112144121103).

The spelling of 20111022110001 in words is "twenty trillion, one hundred eleven billion, twenty-two million, one hundred ten thousand, one".