111001022000021 has 4 divisors (see below), whose sum is σ = 111001329042912. Its totient is φ = 111000714957132.

The previous prime is 111001021999979. The next prime is 111001022000093. The reversal of 111001022000021 is 120000220100111.

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 a cyclic number.

It is not a de Polignac number, because 111001022000021 - 2⁶ = 111001021999957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111001021999966 and 111001022000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111001022009021) 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, 152978531 + ... + 153702416.

It is an arithmetic number, because the mean of its divisors is an integer number (27750332260728).

Almost surely, 2^{111001022000021} is an apocalyptic number.

It is an amenable number.

111001022000021 is a deficient number, since it is larger than the sum of its proper divisors (307042891).

111001022000021 is an equidigital number, since it uses as much as digits as its factorization.

111001022000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307042890.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111001022000021 its reverse (120000220100111), we get a palindrome (231001242100132).

The spelling of 111001022000021 in words is "one hundred eleven trillion, one billion, twenty-two million, twenty-one", and thus it is an aban number.