100111121202121 has 4 divisors (see below), whose sum is σ = 105380127581200. Its totient is φ = 94842114823044.

The previous prime is 100111121202119. The next prime is 100111121202187. The reversal of 100111121202121 is 121202121111001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100111121202121 - 2¹ = 100111121202119 is a prime.

It is a super-2 number, since 2×100111121202121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100111121202095 and 100111121202104.

It is not an unprimeable number, because it can be changed into a prime (100111121202821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2634503189511 + ... + 2634503189548.

It is an arithmetic number, because the mean of its divisors is an integer number (26345031895300).

Almost surely, 2^{100111121202121} is an apocalyptic number.

It is an amenable number.

100111121202121 is a deficient number, since it is larger than the sum of its proper divisors (5269006379079).

100111121202121 is an equidigital number, since it uses as much as digits as its factorization.

100111121202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5269006379078.

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

Adding to 100111121202121 its reverse (121202121111001), we get a palindrome (221313242313122).

The spelling of 100111121202121 in words is "one hundred trillion, one hundred eleven billion, one hundred twenty-one million, two hundred two thousand, one hundred twenty-one".