111132020021 has 8 divisors (see below), whose sum is σ = 121343480544. Its totient is φ = 100938651120.

The previous prime is 111132020003. The next prime is 111132020023. The reversal of 111132020021 is 120020231111.

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 111132020021 - 2²² = 111127825717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111132019978 and 111132020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111132020023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4510055 + ... + 4534628.

It is an arithmetic number, because the mean of its divisors is an integer number (15167935068).

Almost surely, 2^111132020021 is an apocalyptic number.

111132020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111132020021 is a deficient number, since it is larger than the sum of its proper divisors (10211460523).

111132020021 is a wasteful number, since it uses less digits than its factorization.

111132020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9045811.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 111132020021 its reverse (120020231111), we get a palindrome (231152251132).

The spelling of 111132020021 in words is "one hundred eleven billion, one hundred thirty-two million, twenty thousand, twenty-one".