100120002121221 has 8 divisors (see below), whose sum is σ = 138096554650080. Its totient is φ = 64445058836592.

The previous prime is 100120002121193. The next prime is 100120002121301. The reversal of 100120002121221 is 122121200021001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100120002121221 - 2¹¹ = 100120002119173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100120002121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120002191221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575402310955 + ... + 575402311128.

It is an arithmetic number, because the mean of its divisors is an integer number (17262069331260).

Almost surely, 2^{100120002121221} is an apocalyptic number.

It is an amenable number.

100120002121221 is a deficient number, since it is larger than the sum of its proper divisors (37976552528859).

100120002121221 is a wasteful number, since it uses less digits than its factorization.

100120002121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150804622115.

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

Adding to 100120002121221 its reverse (122121200021001), we get a palindrome (222241202142222).

The spelling of 100120002121221 in words is "one hundred trillion, one hundred twenty billion, two million, one hundred twenty-one thousand, two hundred twenty-one".