11111200010121 has 8 divisors (see below), whose sum is σ = 14859691454944. Its totient is φ = 7385087619360.

The previous prime is 11111200010117. The next prime is 11111200010123. The reversal of 11111200010121 is 12101000211111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11111200010121 - 2² = 11111200010117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11111200010097 and 11111200010106.

It is not an unprimeable number, because it can be changed into a prime (11111200010123) 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 7 ways as a sum of consecutive naturals, for example, 5594762356 + ... + 5594764341.

It is an arithmetic number, because the mean of its divisors is an integer number (1857461431868).

Almost surely, 2^{11111200010121} is an apocalyptic number.

It is an amenable number.

11111200010121 is a deficient number, since it is larger than the sum of its proper divisors (3748491444823).

11111200010121 is a wasteful number, since it uses less digits than its factorization.

11111200010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11189527031.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11111200010121 its reverse (12101000211111), we get a palindrome (23212200221232).

The spelling of 11111200010121 in words is "eleven trillion, one hundred eleven billion, two hundred million, ten thousand, one hundred twenty-one".