100100245110121 has 3 divisors (see below), whose sum is σ = 100100255115133. Its totient is φ = 100100235105110.

The previous prime is 100100245110119. The next prime is 100100245110143. The reversal of 100100245110121 is 121011542001001.

The square root of 100100245110121 is 10005011.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 100100245110121 - 2¹ = 100100245110119 is a prime.

It is a super-2 number, since 2×100100245110121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100106245110121) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5002506 + ... + 15007516.

Almost surely, 2^{100100245110121} is an apocalyptic number.

100100245110121 is the 10005011-st square number.

100100245110121 is the 5002506-th centered octagonal number.

It is an amenable number.

100100245110121 is a deficient number, since it is larger than the sum of its proper divisors (10005012).

100100245110121 is an frugal number, since it uses more digits than its factorization.

100100245110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010022 (or 10005011 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 100100245110121 its reverse (121011542001001), we get a palindrome (221111787111122).

The spelling of 100100245110121 in words is "one hundred trillion, one hundred billion, two hundred forty-five million, one hundred ten thousand, one hundred twenty-one".