12202100121 has 4 divisors (see below), whose sum is σ = 16269466832. Its totient is φ = 8134733412.

The previous prime is 12202100101. The next prime is 12202100129. The reversal of 12202100121 is 12100120221.

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 not a de Polignac number, because 12202100121 - 2¹⁰ = 12202099097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12202100097 and 12202100106.

It is not an unprimeable number, because it can be changed into a prime (12202100129) 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, 2033683351 + ... + 2033683356.

It is an arithmetic number, because the mean of its divisors is an integer number (4067366708).

Almost surely, 2^12202100121 is an apocalyptic number.

It is an amenable number.

12202100121 is a deficient number, since it is larger than the sum of its proper divisors (4067366711).

12202100121 is an equidigital number, since it uses as much as digits as its factorization.

12202100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067366710.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12202100121 its reverse (12100120221), we get a palindrome (24302220342).

The spelling of 12202100121 in words is "twelve billion, two hundred two million, one hundred thousand, one hundred twenty-one".