100211021110121 has 4 divisors (see below), whose sum is σ = 100214441661012. Its totient is φ = 100207600559232.

The previous prime is 100211021110111. The next prime is 100211021110133. The reversal of 100211021110121 is 121011120112001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78084863326096 + 22126157784025 = 8836564^2 + 4703845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100211021110121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100211021110096 and 100211021110105.

It is not an unprimeable number, because it can be changed into a prime (100211021110111) 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, 1710231500 + ... + 1710290093.

It is an arithmetic number, because the mean of its divisors is an integer number (25053610415253).

Almost surely, 2^{100211021110121} is an apocalyptic number.

It is an amenable number.

100211021110121 is a deficient number, since it is larger than the sum of its proper divisors (3420550891).

100211021110121 is an equidigital number, since it uses as much as digits as its factorization.

100211021110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420550890.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 100211021110121 its reverse (121011120112001), we get a palindrome (221222141222122).

The spelling of 100211021110121 in words is "one hundred trillion, two hundred eleven billion, twenty-one million, one hundred ten thousand, one hundred twenty-one".