12022100121 has 4 divisors (see below), whose sum is σ = 16029466832. Its totient is φ = 8014733412.

The previous prime is 12022100113. The next prime is 12022100179. The reversal of 12022100121 is 12100122021.

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 12022100121 - 2³ = 12022100113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022100097 and 12022100106.

It is not an unprimeable number, because it can be changed into a prime (12022100021) 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, 2003683351 + ... + 2003683356.

It is an arithmetic number, because the mean of its divisors is an integer number (4007366708).

Almost surely, 2^12022100121 is an apocalyptic number.

It is an amenable number.

12022100121 is a deficient number, since it is larger than the sum of its proper divisors (4007366711).

12022100121 is an equidigital number, since it uses as much as digits as its factorization.

12022100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007366710.

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

Adding to 12022100121 its reverse (12100122021), we get a palindrome (24122222142).

The spelling of 12022100121 in words is "twelve billion, twenty-two million, one hundred thousand, one hundred twenty-one".