12122221010121 has 64 divisors (see below), whose sum is σ = 18172547527680. Its totient is φ = 7985933856000.

The previous prime is 12122221010117. The next prime is 12122221010143. The reversal of 12122221010121 is 12101012222121.

12122221010121 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 12122221010121 - 2² = 12122221010117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122221010094 and 12122221010103.

It is not an unprimeable number, because it can be changed into a prime (12122221010111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2317378576 + ... + 2317383806.

It is an arithmetic number, because the mean of its divisors is an integer number (283946055120).

Almost surely, 2^{12122221010121} is an apocalyptic number.

It is an amenable number.

12122221010121 is a deficient number, since it is larger than the sum of its proper divisors (6050326517559).

12122221010121 is a wasteful number, since it uses less digits than its factorization.

12122221010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335 (or 8329 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12122221010121 its reverse (12101012222121), we get a palindrome (24223233232242).

The spelling of 12122221010121 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, ten thousand, one hundred twenty-one".