12101120121001 has 16 divisors (see below), whose sum is σ = 13042724094720. Its totient is φ = 11186741491200.

The previous prime is 12101120120939. The next prime is 12101120121047. The reversal of 12101120121001 is 10012102110121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12101120121001 - 2¹¹ = 12101120118953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101120121091) 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, 26255301 + ... + 26712226.

It is an arithmetic number, because the mean of its divisors is an integer number (815170255920).

Almost surely, 2^{12101120121001} is an apocalyptic number.

It is an amenable number.

12101120121001 is a deficient number, since it is larger than the sum of its proper divisors (941603973719).

12101120121001 is a wasteful number, since it uses less digits than its factorization.

12101120121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52967784.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12101120121001 its reverse (10012102110121), we get a palindrome (22113222231122).

The spelling of 12101120121001 in words is "twelve trillion, one hundred one billion, one hundred twenty million, one hundred twenty-one thousand, one".