12122101121001 has 16 divisors (see below), whose sum is σ = 16404621129024. Its totient is φ = 7960499515584.

The previous prime is 12122101120993. The next prime is 12122101121029. The reversal of 12122101121001 is 10012110122121.

It is a happy number.

It is not a de Polignac number, because 12122101121001 - 2³ = 12122101120993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12122101121201) 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, 4664971 + ... + 6782783.

It is an arithmetic number, because the mean of its divisors is an integer number (1025288820564).

Almost surely, 2^{12122101121001} is an apocalyptic number.

It is an amenable number.

12122101121001 is a deficient number, since it is larger than the sum of its proper divisors (4282520008023).

12122101121001 is a wasteful number, since it uses less digits than its factorization.

12122101121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146360.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12122101121001 its reverse (10012110122121), we get a palindrome (22134211243122).

The spelling of 12122101121001 in words is "twelve trillion, one hundred twenty-two billion, one hundred one million, one hundred twenty-one thousand, one".