100100000121201 has 12 divisors (see below), whose sum is σ = 144690212760912. Its totient is φ = 66686568630936.

The previous prime is 100100000121113. The next prime is 100100000121221. The reversal of 100100000121201 is 102121000001001.

It is a happy number.

It is not a de Polignac number, because 100100000121201 - 2²⁶ = 100099933012337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100100000121221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3897051711 + ... + 3897077396.

It is an arithmetic number, because the mean of its divisors is an integer number (12057517730076).

Almost surely, 2^{100100000121201} is an apocalyptic number.

It is an amenable number.

100100000121201 is a deficient number, since it is larger than the sum of its proper divisors (44590212639711).

100100000121201 is a wasteful number, since it uses less digits than its factorization.

100100000121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7794130540 (or 7794130537 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100100000121201 its reverse (102121000001001), we get a palindrome (202221000122202).

The spelling of 100100000121201 in words is "one hundred trillion, one hundred billion, one hundred twenty-one thousand, two hundred one".