100121211202121 has 8 divisors (see below), whose sum is σ = 103478364127488. Its totient is φ = 96772023054000.

The previous prime is 100121211202109. The next prime is 100121211202153. The reversal of 100121211202121 is 121202112121001.

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

It is a cyclic number.

It is not a de Polignac number, because 100121211202121 - 2⁶ = 100121211202057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100121211202121.

It is not an unprimeable number, because it can be changed into a prime (100121211202321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1991168750 + ... + 1991219031.

It is an arithmetic number, because the mean of its divisors is an integer number (12934795515936).

Almost surely, 2^{100121211202121} is an apocalyptic number.

It is an amenable number.

100121211202121 is a deficient number, since it is larger than the sum of its proper divisors (3357152925367).

100121211202121 is an equidigital number, since it uses as much as digits as its factorization.

100121211202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3982388623.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 100121211202121 its reverse (121202112121001), we get a palindrome (221323323323122).

The spelling of 100121211202121 in words is "one hundred trillion, one hundred twenty-one billion, two hundred eleven million, two hundred two thousand, one hundred twenty-one".