111211430221 has 8 divisors (see below), whose sum is σ = 117241426944. Its totient is φ = 105334091760.

The previous prime is 111211430207. The next prime is 111211430243. The reversal of 111211430221 is 122034112111.

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 111211430221 - 2⁵ = 111211430189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211430251) 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, 38163070 + ... + 38165983.

It is an arithmetic number, because the mean of its divisors is an integer number (14655178368).

Almost surely, 2^111211430221 is an apocalyptic number.

It is an amenable number.

111211430221 is a deficient number, since it is larger than the sum of its proper divisors (6029996723).

111211430221 is an equidigital number, since it uses as much as digits as its factorization.

111211430221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76329131.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111211430221 its reverse (122034112111), we get a palindrome (233245542332).

The spelling of 111211430221 in words is "one hundred eleven billion, two hundred eleven million, four hundred thirty thousand, two hundred twenty-one".