112021121 has 2 divisors, whose sum is σ = 112021122. Its totient is φ = 112021120.

The previous prime is 112021111. The next prime is 112021127. The reversal of 112021121 is 121120211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101203600 + 10817521 = 10060^2 + 3289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112021121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (112021127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56010560 + 56010561.

It is an arithmetic number, because the mean of its divisors is an integer number (56010561).

Almost surely, 2^112021121 is an apocalyptic number.

It is an amenable number.

112021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

112021121 is an equidigital number, since it uses as much as digits as its factorization.

112021121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 112021121 is about 10584.0030706723. The cubic root of 112021121 is about 482.0587512965.

Adding to 112021121 its reverse (121120211), we get a palindrome (233141332).

The spelling of 112021121 in words is "one hundred twelve million, twenty-one thousand, one hundred twenty-one".