12121001112121 has 16 divisors (see below), whose sum is σ = 13262365138176. Its totient is φ = 10986251760000.

The previous prime is 12121001112079. The next prime is 12121001112131. The reversal of 12121001112121 is 12121110012121.

12121001112121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12121001112121 - 2¹¹ = 12121001110073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12121001112095 and 12121001112104.

It is not an unprimeable number, because it can be changed into a prime (12121001112131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5271541 + ... + 7213261.

It is an arithmetic number, because the mean of its divisors is an integer number (828897821136).

Almost surely, 2^{12121001112121} is an apocalyptic number.

12121001112121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12121001112121 is a deficient number, since it is larger than the sum of its proper divisors (1141364026055).

12121001112121 is a wasteful number, since it uses less digits than its factorization.

12121001112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943424.

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

Adding to 12121001112121 its reverse (12121110012121), we get a palindrome (24242111124242).

The spelling of 12121001112121 in words is "twelve trillion, one hundred twenty-one billion, one million, one hundred twelve thousand, one hundred twenty-one".