111012221100001 has 6 divisors (see below), whose sum is σ = 120208499771190. Its totient is φ = 102472819476768.

The previous prime is 111012221099977. The next prime is 111012221100019. The reversal of 111012221100001 is 100001122210111.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16225952141025 + 94786268958976 = 4028145^2 + 9735824^2 .

It is not a de Polignac number, because 111012221100001 - 2¹³ = 111012221091809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111012221100041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 328438523796 + ... + 328438524133.

It is an arithmetic number, because the mean of its divisors is an integer number (20034749961865).

Almost surely, 2^{111012221100001} is an apocalyptic number.

It is an amenable number.

111012221100001 is a deficient number, since it is larger than the sum of its proper divisors (9196278671189).

111012221100001 is an equidigital number, since it uses as much as digits as its factorization.

111012221100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656877047955 (or 656877047942 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111012221100001 its reverse (100001122210111), we get a palindrome (211013343310112).

The spelling of 111012221100001 in words is "one hundred eleven trillion, twelve billion, two hundred twenty-one million, one hundred thousand, one".