10000121201111 has 4 divisors (see below), whose sum is σ = 10000323081672. Its totient is φ = 9999919320552.

The previous prime is 10000121201023. The next prime is 10000121201117. The reversal of 10000121201111 is 11110212100001.

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 10000121201111 - 2⁴² = 5602074690007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000121201092 and 10000121201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000121201117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100865960 + ... + 100965053.

It is an arithmetic number, because the mean of its divisors is an integer number (2500080770418).

Almost surely, 2^{10000121201111} is an apocalyptic number.

10000121201111 is a deficient number, since it is larger than the sum of its proper divisors (201880561).

10000121201111 is an equidigital number, since it uses as much as digits as its factorization.

10000121201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201880560.

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

Adding to 10000121201111 its reverse (11110212100001), we get a palindrome (21110333301112).

The spelling of 10000121201111 in words is "ten trillion, one hundred twenty-one million, two hundred one thousand, one hundred eleven".