10001100121211 has 4 divisors (see below), whose sum is σ = 10189800123552. Its totient is φ = 9812400118872.

The previous prime is 10001100121163. The next prime is 10001100121231. The reversal of 10001100121211 is 11212100110001.

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

It is a cyclic number.

It is not a de Polignac number, because 10001100121211 - 2⁴² = 5603053610107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001100121192 and 10001100121201.

It is not an unprimeable number, because it can be changed into a prime (10001100121231) 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, 94350001091 + ... + 94350001196.

It is an arithmetic number, because the mean of its divisors is an integer number (2547450030888).

Almost surely, 2^{10001100121211} is an apocalyptic number.

10001100121211 is a deficient number, since it is larger than the sum of its proper divisors (188700002341).

10001100121211 is an equidigital number, since it uses as much as digits as its factorization.

10001100121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188700002340.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10001100121211 its reverse (11212100110001), we get a palindrome (21213200231212).

The spelling of 10001100121211 in words is "ten trillion, one billion, one hundred million, one hundred twenty-one thousand, two hundred eleven".