12121001121 has 8 divisors (see below), whose sum is σ = 16537180000. Its totient is φ = 7892744832.

The previous prime is 12121001119. The next prime is 12121001129. The reversal of 12121001121 is 12110012121.

12121001121 is nontrivially palindromic in base 5.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12121001121 - 2¹ = 12121001119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121001097 and 12121001106.

It is not an unprimeable number, because it can be changed into a prime (12121001129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46980496 + ... + 46980753.

It is an arithmetic number, because the mean of its divisors is an integer number (2067147500).

Almost surely, 2^12121001121 is an apocalyptic number.

It is an amenable number.

12121001121 is a deficient number, since it is larger than the sum of its proper divisors (4416178879).

12121001121 is an equidigital number, since it uses as much as digits as its factorization.

12121001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93961295.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12121001121 its reverse (12110012121), we get a palindrome (24231013242).

The spelling of 12121001121 in words is "twelve billion, one hundred twenty-one million, one thousand, one hundred twenty-one".