111122122101001 has 16 divisors (see below), whose sum is σ = 128095947048960. Its totient is φ = 95404793861520.

The previous prime is 111122122100999. The next prime is 111122122101007. The reversal of 111122122101001 is 100101221221111.

It is not a de Polignac number, because 111122122101001 - 2¹ = 111122122100999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111122122101007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2779839975 + ... + 2779879948.

It is an arithmetic number, because the mean of its divisors is an integer number (8005996690560).

Almost surely, 2^{111122122101001} is an apocalyptic number.

111122122101001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111122122101001 is a deficient number, since it is larger than the sum of its proper divisors (16973824947959).

111122122101001 is a wasteful number, since it uses less digits than its factorization.

111122122101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559720036.

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

Adding to 111122122101001 its reverse (100101221221111), we get a palindrome (211223343322112).

The spelling of 111122122101001 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred one thousand, one".