112121222121111 has 32 divisors (see below), whose sum is σ = 176863954291200. Its totient is φ = 61817585235840.

The previous prime is 112121222121071. The next prime is 112121222121149. The reversal of 112121222121111 is 111121222121211.

It is not a de Polignac number, because 112121222121111 - 2³³ = 112112632186519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121222121911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62205060 + ... + 63982121.

It is an arithmetic number, because the mean of its divisors is an integer number (5526998571600).

Almost surely, 2^{112121222121111} is an apocalyptic number.

112121222121111 is a deficient number, since it is larger than the sum of its proper divisors (64742732170089).

112121222121111 is a wasteful number, since it uses less digits than its factorization.

112121222121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126188679.

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

Adding to 112121222121111 its reverse (111121222121211), we get a palindrome (223242444242322).

The spelling of 112121222121111 in words is "one hundred twelve trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred eleven".