112100021 has 8 divisors (see below), whose sum is σ = 122999904. Its totient is φ = 101318320.

The previous prime is 112099991. The next prime is 112100033. The reversal of 112100021 is 120001211.

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 112100021 - 2⁶ = 112099957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112099981 and 112100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112100621) 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, 27551 + ... + 31356.

It is an arithmetic number, because the mean of its divisors is an integer number (15374988).

Almost surely, 2^112100021 is an apocalyptic number.

112100021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112100021 is a deficient number, since it is larger than the sum of its proper divisors (10899883).

112100021 is a wasteful number, since it uses less digits than its factorization.

112100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59091.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 112100021 is about 10587.7297377672. The cubic root of 112100021 is about 482.1719011174.

Adding to 112100021 its reverse (120001211), we get a palindrome (232101232).

The spelling of 112100021 in words is "one hundred twelve million, one hundred thousand, twenty-one".