111120211000021 has 8 divisors (see below), whose sum is σ = 114306738134400. Its totient is φ = 107956363774560.

The previous prime is 111120210999989. The next prime is 111120211000063. The reversal of 111120211000021 is 120000112021111.

It is a happy number.

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 111120211000021 - 2⁵ = 111120210999989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111120210999965 and 111120211000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120211000321) 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, 5669967291 + ... + 5669986888.

It is an arithmetic number, because the mean of its divisors is an integer number (14288342266800).

Almost surely, 2^{111120211000021} is an apocalyptic number.

It is an amenable number.

111120211000021 is a deficient number, since it is larger than the sum of its proper divisors (3186527134379).

111120211000021 is a wasteful number, since it uses less digits than its factorization.

111120211000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11339954459.

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

Adding to 111120211000021 its reverse (120000112021111), we get a palindrome (231120323021132).

The spelling of 111120211000021 in words is "one hundred eleven trillion, one hundred twenty billion, two hundred eleven million, twenty-one", and thus it is an aban number.