111022212122001 has 24 divisors (see below), whose sum is σ = 161865790846760. Its totient is φ = 73322572536576.

The previous prime is 111022212121993. The next prime is 111022212122033. The reversal of 111022212122001 is 100221212220111.

It can be written as a sum of positive squares in 4 ways, for example, as 45254896934976 + 65767315187025 = 6727176^2 + 8109705^2 .

It is not a de Polignac number, because 111022212122001 - 2³ = 111022212121993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111022212122201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4731460 + ... + 15634293.

Almost surely, 2^{111022212122001} is an apocalyptic number.

It is an amenable number.

111022212122001 is a deficient number, since it is larger than the sum of its proper divisors (50843578724759).

111022212122001 is a wasteful number, since it uses less digits than its factorization.

111022212122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20371425 (or 20371422 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111022212122001 its reverse (100221212220111), we get a palindrome (211243424342112).

The spelling of 111022212122001 in words is "one hundred eleven trillion, twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, one".