120121212100001 has 16 divisors (see below), whose sum is σ = 142017456729600. Its totient is φ = 99409096868928.

The previous prime is 120121212099971. The next prime is 120121212100027. The reversal of 120121212100001 is 100001212121021.

It is not a de Polignac number, because 120121212100001 - 2²² = 120121207905697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121212100061) 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, 8399096 + ... + 17629158.

It is an arithmetic number, because the mean of its divisors is an integer number (8876091045600).

Almost surely, 2^{120121212100001} is an apocalyptic number.

It is an amenable number.

120121212100001 is a deficient number, since it is larger than the sum of its proper divisors (21896244629599).

120121212100001 is an equidigital number, since it uses as much as digits as its factorization.

120121212100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9294208.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120121212100001 its reverse (100001212121021), we get a palindrome (220122424221022).

The spelling of 120121212100001 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred twelve million, one hundred thousand, one".