112211211221121 has 8 divisors (see below), whose sum is σ = 149615007828480. Its totient is φ = 74807444380592.

The previous prime is 112211211221113. The next prime is 112211211221267. The reversal of 112211211221121 is 121122112112211.

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 112211211221121 - 2³ = 112211211221113 is a prime.

It is a super-4 number, since 4×112211211221121⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (112211211221321) 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, 3765235 + ... + 15446663.

It is an arithmetic number, because the mean of its divisors is an integer number (18701875978560).

Almost surely, 2^{112211211221121} is an apocalyptic number.

It is an amenable number.

112211211221121 is a deficient number, since it is larger than the sum of its proper divisors (37403796607359).

112211211221121 is a wasteful number, since it uses less digits than its factorization.

112211211221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14883415.

The product of its digits is 64, while the sum is 21.

Adding to 112211211221121 its reverse (121122112112211), we get a palindrome (233333323333332).

The spelling of 112211211221121 in words is "one hundred twelve trillion, two hundred eleven billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twenty-one".