11110210121 has 4 divisors (see below), whose sum is σ = 11117099652. Its totient is φ = 11103320592.

The previous prime is 11110210117. The next prime is 11110210123. The reversal of 11110210121 is 12101201111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12101201111 = 131 ⋅92375581.

It can be written as a sum of positive squares in 2 ways, for example, as 4308084496 + 6802125625 = 65636^2 + 82475^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110210121 - 2² = 11110210117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11110210123) 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, 3442346 + ... + 3445571.

It is an arithmetic number, because the mean of its divisors is an integer number (2779274913).

Almost surely, 2^11110210121 is an apocalyptic number.

It is an amenable number.

11110210121 is a deficient number, since it is larger than the sum of its proper divisors (6889531).

11110210121 is an equidigital number, since it uses as much as digits as its factorization.

11110210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6889530.

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

Adding to 11110210121 its reverse (12101201111), we get a palindrome (23211411232).

The spelling of 11110210121 in words is "eleven billion, one hundred ten million, two hundred ten thousand, one hundred twenty-one".