111030221221 has 8 divisors (see below), whose sum is σ = 113967725688. Its totient is φ = 108128760000.

The previous prime is 111030221219. The next prime is 111030221249. The reversal of 111030221221 is 122122030111.

It can be written as a sum of positive squares in 4 ways, for example, as 11688636996 + 99341584225 = 108114^2 + 315185^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111030221221 - 2¹ = 111030221219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111030221195 and 111030221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111030221201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9004570 + ... + 9016891.

It is an arithmetic number, because the mean of its divisors is an integer number (14245965711).

Almost surely, 2^111030221221 is an apocalyptic number.

It is an amenable number.

111030221221 is a deficient number, since it is larger than the sum of its proper divisors (2937504467).

111030221221 is a wasteful number, since it uses less digits than its factorization.

111030221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18021623.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111030221221 its reverse (122122030111), we get a palindrome (233152251332).

The spelling of 111030221221 in words is "one hundred eleven billion, thirty million, two hundred twenty-one thousand, two hundred twenty-one".