11030120121 has 4 divisors (see below), whose sum is σ = 14706826832. Its totient is φ = 7353413412.

The previous prime is 11030120117. The next prime is 11030120131. The reversal of 11030120121 is 12102103011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12102103011 = 3 ⋅4034034337.

It is not a de Polignac number, because 11030120121 - 2² = 11030120117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11030120097 and 11030120106.

It is not an unprimeable number, because it can be changed into a prime (11030120131) 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, 1838353351 + ... + 1838353356.

It is an arithmetic number, because the mean of its divisors is an integer number (3676706708).

Almost surely, 2^11030120121 is an apocalyptic number.

It is an amenable number.

11030120121 is a deficient number, since it is larger than the sum of its proper divisors (3676706711).

11030120121 is an equidigital number, since it uses as much as digits as its factorization.

11030120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676706710.

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

Adding to 11030120121 its reverse (12102103011), we get a palindrome (23132223132).

The spelling of 11030120121 in words is "eleven billion, thirty million, one hundred twenty thousand, one hundred twenty-one".