111333220121 has 4 divisors (see below), whose sum is σ = 111459306192. Its totient is φ = 111207134052.

The previous prime is 111333220109. The next prime is 111333220199. The reversal of 111333220121 is 121022333111.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 111333220121 - 2⁶ = 111333220057 is a prime.

It is a super-2 number, since 2×111333220121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111333220093 and 111333220102.

It is not an unprimeable number, because it can be changed into a prime (111333220321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63041711 + ... + 63043476.

It is an arithmetic number, because the mean of its divisors is an integer number (27864826548).

Almost surely, 2^111333220121 is an apocalyptic number.

It is an amenable number.

111333220121 is a deficient number, since it is larger than the sum of its proper divisors (126086071).

111333220121 is an equidigital number, since it uses as much as digits as its factorization.

111333220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126086070.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111333220121 its reverse (121022333111), we get a palindrome (232355553232).

The spelling of 111333220121 in words is "one hundred eleven billion, three hundred thirty-three million, two hundred twenty thousand, one hundred twenty-one".