112211211221 has 8 divisors (see below), whose sum is σ = 115842943488. Its totient is φ = 108580230000.

The previous prime is 112211211197. The next prime is 112211211227. The reversal of 112211211221 is 122112112211.

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 112211211221 - 2⁶ = 112211211157 is a prime.

It is a super-3 number, since 3×112211211221³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112211211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112211211227) 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, 124136 + ... + 489726.

It is an arithmetic number, because the mean of its divisors is an integer number (14480367936).

Almost surely, 2^112211211221 is an apocalyptic number.

It is an amenable number.

112211211221 is a deficient number, since it is larger than the sum of its proper divisors (3631732267).

112211211221 is an equidigital number, since it uses as much as digits as its factorization.

112211211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375523.

The product of its digits is 32, while the sum is 17.

Adding to 112211211221 its reverse (122112112211), we get a palindrome (234323323432).

The spelling of 112211211221 in words is "one hundred twelve billion, two hundred eleven million, two hundred eleven thousand, two hundred twenty-one".