12120213101 has 16 divisors (see below), whose sum is σ = 12998553600. Its totient is φ = 11275540848.

The previous prime is 12120213089. The next prime is 12120213143. The reversal of 12120213101 is 10131202121.

It is a cyclic number.

It is not a de Polignac number, because 12120213101 - 2¹⁸ = 12119950957 is a prime.

It is a super-2 number, since 2×12120213101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120213191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71960 + ... + 171518.

It is an arithmetic number, because the mean of its divisors is an integer number (812409600).

Almost surely, 2^12120213101 is an apocalyptic number.

It is an amenable number.

12120213101 is a deficient number, since it is larger than the sum of its proper divisors (878340499).

12120213101 is an equidigital number, since it uses as much as digits as its factorization.

12120213101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99728.

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

Adding to 12120213101 its reverse (10131202121), we get a palindrome (22251415222).

The spelling of 12120213101 in words is "twelve billion, one hundred twenty million, two hundred thirteen thousand, one hundred one".