111220003121 has 4 divisors (see below), whose sum is σ = 111281014272. Its totient is φ = 111158991972.

The previous prime is 111220003093. The next prime is 111220003129. The reversal of 111220003121 is 121300022111.

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: 121300022111 = 127189 ⋅953699.

It is a cyclic number.

It is not a de Polignac number, because 111220003121 - 2¹⁰ = 111220002097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111220003096 and 111220003105.

It is not an unprimeable number, because it can be changed into a prime (111220003129) 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, 30502841 + ... + 30506486.

It is an arithmetic number, because the mean of its divisors is an integer number (27820253568).

Almost surely, 2^111220003121 is an apocalyptic number.

It is an amenable number.

111220003121 is a deficient number, since it is larger than the sum of its proper divisors (61011151).

111220003121 is an equidigital number, since it uses as much as digits as its factorization.

111220003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61011150.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 111220003121 its reverse (121300022111), we get a palindrome (232520025232).

The spelling of 111220003121 in words is "one hundred eleven billion, two hundred twenty million, three thousand, one hundred twenty-one".