120021111011 has 8 divisors (see below), whose sum is σ = 122953964784. Its totient is φ = 117088519680.

The previous prime is 120021110999. The next prime is 120021111019. The reversal of 120021111011 is 110111120021.

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 120021111011 - 2³⁰ = 118947369187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021110983 and 120021111001.

It is not an unprimeable number, because it can be changed into a prime (120021111019) 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, 1117700 + ... + 1220366.

It is an arithmetic number, because the mean of its divisors is an integer number (15369245598).

Almost surely, 2^120021111011 is an apocalyptic number.

120021111011 is a deficient number, since it is larger than the sum of its proper divisors (2932853773).

120021111011 is a wasteful number, since it uses less digits than its factorization.

120021111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131221.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 120021111011 its reverse (110111120021), we get a palindrome (230132231032).

The spelling of 120021111011 in words is "one hundred twenty billion, twenty-one million, one hundred eleven thousand, eleven".