112112101221 has 4 divisors (see below), whose sum is σ = 149482801632. Its totient is φ = 74741400812.

The previous prime is 112112101201. The next prime is 112112101237. The reversal of 112112101221 is 122101211211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 112112101221 - 2¹³ = 112112093029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112112101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112112101201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18685350201 + ... + 18685350206.

It is an arithmetic number, because the mean of its divisors is an integer number (37370700408).

Almost surely, 2^112112101221 is an apocalyptic number.

It is an amenable number.

112112101221 is a deficient number, since it is larger than the sum of its proper divisors (37370700411).

112112101221 is an equidigital number, since it uses as much as digits as its factorization.

112112101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37370700410.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 112112101221 its reverse (122101211211), we get a palindrome (234213312432).

The spelling of 112112101221 in words is "one hundred twelve billion, one hundred twelve million, one hundred one thousand, two hundred twenty-one".