112112112221021 has 16 divisors (see below), whose sum is σ = 122511988857600. Its totient is φ = 101746996646400.

The previous prime is 112112112220993. The next prime is 112112112221027. The reversal of 112112112221021 is 120122211211211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 112112112221021 - 2¹⁴ = 112112112204637 is a prime.

It is a super-3 number, since 3×112112112221021³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112112112220984 and 112112112221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112112112221027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16315820 + ... + 22145658.

It is an arithmetic number, because the mean of its divisors is an integer number (7656999303600).

Almost surely, 2^{112112112221021} is an apocalyptic number.

112112112221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112112112221021 is a deficient number, since it is larger than the sum of its proper divisors (10399876636579).

112112112221021 is a wasteful number, since it uses less digits than its factorization.

112112112221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5832820.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 112112112221021 its reverse (120122211211211), we get a palindrome (232234323432232).

The spelling of 112112112221021 in words is "one hundred twelve trillion, one hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, twenty-one".