111021000001 has 4 divisors (see below), whose sum is σ = 111021678592. Its totient is φ = 111020321412.

The previous prime is 111020999993. The next prime is 111021000007. The reversal of 111021000001 is 100000120111.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 111021000001 - 2³ = 111020999993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111021000007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73600 + ... + 476926.

It is an arithmetic number, because the mean of its divisors is an integer number (27755419648).

Almost surely, 2^111021000001 is an apocalyptic number.

It is an amenable number.

111021000001 is a deficient number, since it is larger than the sum of its proper divisors (678591).

111021000001 is an equidigital number, since it uses as much as digits as its factorization.

111021000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678590.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 111021000001 its reverse (100000120111), we get a palindrome (211021120112).

The spelling of 111021000001 in words is "one hundred eleven billion, twenty-one million, one", and thus it is an aban number.