11112100102121 has 4 divisors (see below), whose sum is σ = 11112174078852. Its totient is φ = 11112026125392.

The previous prime is 11112100102097. The next prime is 11112100102141. The reversal of 11112100102121 is 12120100121111.

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 4511953746496 + 6600146355625 = 2124136^2 + 2569075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112100102121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112100102096 and 11112100102105.

It is not an unprimeable number, because it can be changed into a prime (11112100102141) 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, 36762590 + ... + 37063623.

It is an arithmetic number, because the mean of its divisors is an integer number (2778043519713).

Almost surely, 2^{11112100102121} is an apocalyptic number.

It is an amenable number.

11112100102121 is a deficient number, since it is larger than the sum of its proper divisors (73976731).

11112100102121 is an equidigital number, since it uses as much as digits as its factorization.

11112100102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73976730.

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

Adding to 11112100102121 its reverse (12120100121111), we get a palindrome (23232200223232).

The spelling of 11112100102121 in words is "eleven trillion, one hundred twelve billion, one hundred million, one hundred two thousand, one hundred twenty-one".