11112030121 has 4 divisors (see below), whose sum is σ = 11160554500. Its totient is φ = 11063505744.

The previous prime is 11112030103. The next prime is 11112030203. The reversal of 11112030121 is 12103021111.

It is a happy number.

11112030121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12103021111 = 3251 ⋅3722861.

It can be written as a sum of positive squares in 2 ways, for example, as 5250596521 + 5861433600 = 72461^2 + 76560^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112030121 - 2⁹ = 11112029609 is a prime.

It is a super-2 number, since 2×11112030121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112030221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24261846 + ... + 24262303.

It is an arithmetic number, because the mean of its divisors is an integer number (2790138625).

Almost surely, 2^11112030121 is an apocalyptic number.

It is an amenable number.

11112030121 is a deficient number, since it is larger than the sum of its proper divisors (48524379).

11112030121 is an equidigital number, since it uses as much as digits as its factorization.

11112030121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48524378.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11112030121 its reverse (12103021111), we get a palindrome (23215051232).

The spelling of 11112030121 in words is "eleven billion, one hundred twelve million, thirty thousand, one hundred twenty-one".