120012211121 has 16 divisors (see below), whose sum is σ = 131156841600. Its totient is φ = 108906842880.

The previous prime is 120012211087. The next prime is 120012211133. The reversal of 120012211121 is 121112210021.

It is not a de Polignac number, because 120012211121 - 2¹⁸ = 120011948977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120012211096 and 120012211105.

It is not an unprimeable number, because it can be changed into a prime (120012211171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17266955 + ... + 17273903.

It is an arithmetic number, because the mean of its divisors is an integer number (8197302600).

Almost surely, 2^120012211121 is an apocalyptic number.

120012211121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120012211121 is a deficient number, since it is larger than the sum of its proper divisors (11144630479).

120012211121 is a wasteful number, since it uses less digits than its factorization.

120012211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9544.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120012211121 its reverse (121112210021), we get a palindrome (241124421142).

It can be divided in two parts, 120012 and 211121, that added together give a palindrome (331133).

The spelling of 120012211121 in words is "one hundred twenty billion, twelve million, two hundred eleven thousand, one hundred twenty-one".