112012123421 has 8 divisors (see below), whose sum is σ = 122215337184. Its totient is φ = 101812291920.

The previous prime is 112012123397. The next prime is 112012123439. The reversal of 112012123421 is 124321210211.

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 112012123421 - 2⁶ = 112012123357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112012123393 and 112012123402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112012123441) 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, 776066 + ... + 909011.

It is an arithmetic number, because the mean of its divisors is an integer number (15276917148).

Almost surely, 2^112012123421 is an apocalyptic number.

112012123421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112012123421 is a deficient number, since it is larger than the sum of its proper divisors (10203213763).

112012123421 is a wasteful number, since it uses less digits than its factorization.

112012123421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691131.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 112012123421 its reverse (124321210211), we get a palindrome (236333333632).

The spelling of 112012123421 in words is "one hundred twelve billion, twelve million, one hundred twenty-three thousand, four hundred twenty-one".