112198021 has 16 divisors (see below), whose sum is σ = 131299840. Its totient is φ = 94944960.

The previous prime is 112197997. The next prime is 112198049. The reversal of 112198021 is 120891211.

It is a cyclic number.

It is not a de Polignac number, because 112198021 - 2¹¹ = 112195973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112193021) 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, 331 + ... + 14983.

It is an arithmetic number, because the mean of its divisors is an integer number (8206240).

Almost surely, 2^112198021 is an apocalyptic number.

112198021 is the 6116-th hex number.

It is an amenable number.

112198021 is a deficient number, since it is larger than the sum of its proper divisors (19101819).

112198021 is a wasteful number, since it uses less digits than its factorization.

112198021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14716.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 112198021 is about 10592.3567254884. The cubic root of 112198021 is about 482.3123681836.

The spelling of 112198021 in words is "one hundred twelve million, one hundred ninety-eight thousand, twenty-one".