120021100111 has 32 divisors (see below), whose sum is σ = 132922944000. Its totient is φ = 107467678080.

The previous prime is 120021100079. The next prime is 120021100153. The reversal of 120021100111 is 111001120021.

It is a cyclic number.

It is not a de Polignac number, because 120021100111 - 2⁵ = 120021100079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021100811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162409780 + ... + 162410518.

It is an arithmetic number, because the mean of its divisors is an integer number (4153842000).

Almost surely, 2^120021100111 is an apocalyptic number.

120021100111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120021100111 is a deficient number, since it is larger than the sum of its proper divisors (12901843889).

120021100111 is a wasteful number, since it uses less digits than its factorization.

120021100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 120021100111 its reverse (111001120021), we get a palindrome (231022220132).

The spelling of 120021100111 in words is "one hundred twenty billion, twenty-one million, one hundred thousand, one hundred eleven".