111111122020001 has 4 divisors (see below), whose sum is σ = 111172475485104. Its totient is φ = 111049768554900.

The previous prime is 111111122019977. The next prime is 111111122020033. The reversal of 111111122020001 is 100020221111111.

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 a de Polignac number, because none of the positive numbers 2^k-111111122020001 is a prime.

It is a super-2 number, since 2×111111122020001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111122020061) 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, 30676729835 + ... + 30676733456.

It is an arithmetic number, because the mean of its divisors is an integer number (27793118871276).

Almost surely, 2^{111111122020001} is an apocalyptic number.

It is an amenable number.

111111122020001 is a deficient number, since it is larger than the sum of its proper divisors (61353465103).

111111122020001 is an equidigital number, since it uses as much as digits as its factorization.

111111122020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61353465102.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111111122020001 its reverse (100020221111111), we get a palindrome (211131343131112).

The spelling of 111111122020001 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty-two million, twenty thousand, one".