111000220021 has 8 divisors (see below), whose sum is σ = 111259794464. Its totient is φ = 110740916880.

The previous prime is 111000219989. The next prime is 111000220043. The reversal of 111000220021 is 120022000111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111000220021 - 2⁵ = 111000219989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000220621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763255 + ... + 896971.

It is an arithmetic number, because the mean of its divisors is an integer number (13907474308).

Almost surely, 2^111000220021 is an apocalyptic number.

It is an amenable number.

111000220021 is a deficient number, since it is larger than the sum of its proper divisors (259574443).

111000220021 is a wasteful number, since it uses less digits than its factorization.

111000220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135651.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111000220021 its reverse (120022000111), we get a palindrome (231022220132).

The spelling of 111000220021 in words is "one hundred eleven billion, two hundred twenty thousand, twenty-one".