111201212210221 has 8 divisors (see below), whose sum is σ = 128618269545024. Its totient is φ = 94166947344480.

The previous prime is 111201212210189. The next prime is 111201212210227. The reversal of 111201212210221 is 122012212102111.

It is a happy number.

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 111201212210221 - 2⁵ = 111201212210189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201212210227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95698116640 + ... + 95698117801.

It is an arithmetic number, because the mean of its divisors is an integer number (16077283693128).

Almost surely, 2^{111201212210221} is an apocalyptic number.

It is an amenable number.

111201212210221 is a deficient number, since it is larger than the sum of its proper divisors (17417057334803).

111201212210221 is an equidigital number, since it uses as much as digits as its factorization.

111201212210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191396234531.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111201212210221 its reverse (122012212102111), we get a palindrome (233213424312332).

The spelling of 111201212210221 in words is "one hundred eleven trillion, two hundred one billion, two hundred twelve million, two hundred ten thousand, two hundred twenty-one".