111021100220001 has 4 divisors (see below), whose sum is σ = 148028133626672. Its totient is φ = 74014066813332.

The previous prime is 111021100219943. The next prime is 111021100220011. The reversal of 111021100220001 is 100022001120111.

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 111021100220001 - 2⁹ = 111021100219489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111021100220011) 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, 18503516703331 + ... + 18503516703336.

It is an arithmetic number, because the mean of its divisors is an integer number (37007033406668).

Almost surely, 2^{111021100220001} is an apocalyptic number.

It is an amenable number.

111021100220001 is a deficient number, since it is larger than the sum of its proper divisors (37007033406671).

111021100220001 is an equidigital number, since it uses as much as digits as its factorization.

111021100220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37007033406670.

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

Adding to 111021100220001 its reverse (100022001120111), we get a palindrome (211043101340112).

The spelling of 111021100220001 in words is "one hundred eleven trillion, twenty-one billion, one hundred million, two hundred twenty thousand, one".