111012130201221 has 20 divisors (see below), whose sum is σ = 166250650489132. Its totient is φ = 73821668424768.

The previous prime is 111012130201211. The next prime is 111012130201279. The reversal of 111012130201221 is 122102031210111.

It is a happy number.

111012130201221 is a `hidden beast` number, since 1 + 110 + 1 + 2 + 130 + 201 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50805176450625 + 60206953750596 = 7127775^2 + 7759314^2 .

It is not a de Polignac number, because 111012130201221 - 2⁶ = 111012130201157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111012130201194 and 111012130201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012130201211) 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 19 ways as a sum of consecutive naturals, for example, 1726063720 + ... + 1726128033.

Almost surely, 2^{111012130201221} is an apocalyptic number.

It is an amenable number.

111012130201221 is a deficient number, since it is larger than the sum of its proper divisors (55238520287911).

111012130201221 is an equidigital number, since it uses as much as digits as its factorization.

111012130201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452192162 (or 3452192153 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111012130201221 its reverse (122102031210111), we get a palindrome (233114161411332).

The spelling of 111012130201221 in words is "one hundred eleven trillion, twelve billion, one hundred thirty million, two hundred one thousand, two hundred twenty-one".