100121220122001 has 16 divisors (see below), whose sum is σ = 143872140781824. Its totient is φ = 61566628166784.

The previous prime is 100121220121991. The next prime is 100121220122009. The reversal of 100121220122001 is 100221022121001.

It is not a de Polignac number, because 100121220122001 - 2²² = 100121215927697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100121220122009) 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, 967246956 + ... + 967350461.

It is an arithmetic number, because the mean of its divisors is an integer number (8992008798864).

Almost surely, 2^{100121220122001} is an apocalyptic number.

It is an amenable number.

100121220122001 is a deficient number, since it is larger than the sum of its proper divisors (43750920659823).

100121220122001 is a wasteful number, since it uses less digits than its factorization.

100121220122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934598760.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100121220122001 its reverse (100221022121001), we get a palindrome (200342242243002).

The spelling of 100121220122001 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, one".