112111212212021 has 24 divisors (see below), whose sum is σ = 123279824249400. Its totient is φ = 101877819120000.

The previous prime is 112111212212003. The next prime is 112111212212081. The reversal of 112111212212021 is 120212212111211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13726699921 + 112097485512100 = 117161^2 + 10587610^2 .

It is not a de Polignac number, because 112111212212021 - 2²⁶ = 112111145103157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112111212211984 and 112111212212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112111212212081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4712721395 + ... + 4712745183.

It is an arithmetic number, because the mean of its divisors is an integer number (5136659343725).

Almost surely, 2^{112111212212021} is an apocalyptic number.

112111212212021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112111212212021 is a deficient number, since it is larger than the sum of its proper divisors (11168612037379).

112111212212021 is a wasteful number, since it uses less digits than its factorization.

112111212212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38021 (or 38010 counting only the distinct ones).

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

Adding to 112111212212021 its reverse (120212212111211), we get a palindrome (232323424323232).

The spelling of 112111212212021 in words is "one hundred twelve trillion, one hundred eleven billion, two hundred twelve million, two hundred twelve thousand, twenty-one".