112180021 has 2 divisors, whose sum is σ = 112180022. Its totient is φ = 112180020.

The previous prime is 112179997. The next prime is 112180027. The reversal of 112180021 is 120081211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110019121 + 2160900 = 10489^2 + 1470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112180021 is a prime.

It is a super-2 number, since 2×112180021² = 25168714223120882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 112179977 and 112180004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112180027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56090010 + 56090011.

It is an arithmetic number, because the mean of its divisors is an integer number (56090011).

Almost surely, 2^112180021 is an apocalyptic number.

It is an amenable number.

112180021 is a deficient number, since it is larger than the sum of its proper divisors (1).

112180021 is an equidigital number, since it uses as much as digits as its factorization.

112180021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 112180021 is about 10591.5070221381. The cubic root of 112180021 is about 482.2865742440.

The spelling of 112180021 in words is "one hundred twelve million, one hundred eighty thousand, twenty-one".