12101200210121 has 4 divisors (see below), whose sum is σ = 13201309320144. Its totient is φ = 11001091100100.

The previous prime is 12101200210091. The next prime is 12101200210147.

12101200210121 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12101200210121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12101200210096 and 12101200210105.

It is not an unprimeable number, because it can be changed into a prime (12101200210171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550054554995 + ... + 550054555016.

It is an arithmetic number, because the mean of its divisors is an integer number (3300327330036).

Almost surely, 2^{12101200210121} is an apocalyptic number.

12101200210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101200210121 is a deficient number, since it is larger than the sum of its proper divisors (1100109110023).

12101200210121 is a wasteful number, since it uses less digits than its factorization.

12101200210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100109110022.

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

It can be divided in two parts, 12101200 and 210121, that added together give a palindrome (12311321).

The spelling of 12101200210121 in words is "twelve trillion, one hundred one billion, two hundred million, two hundred ten thousand, one hundred twenty-one".