112121213 has 2 divisors, whose sum is σ = 112121214. Its totient is φ = 112121212.

The previous prime is 112121209. The next prime is 112121237. The reversal of 112121213 is 312121211.

It is a m-pointer prime, because the next prime (112121237) can be obtained adding 112121213 to its product of digits (24).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110733529 + 1387684 = 10523^2 + 1178^2 .

It is a cyclic number.

It is not a de Polignac number, because 112121213 - 2² = 112121209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112121293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060606 + 56060607.

It is an arithmetic number, because the mean of its divisors is an integer number (56060607).

Almost surely, 2^112121213 is an apocalyptic number.

It is an amenable number.

112121213 is a deficient number, since it is larger than the sum of its proper divisors (1).

112121213 is an equidigital number, since it uses as much as digits as its factorization.

112121213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24, while the sum is 14.

The square root of 112121213 is about 10588.7304715910. The cubic root of 112121213 is about 482.2022833392.

Adding to 112121213 its reverse (312121211), we get a palindrome (424242424).

The spelling of 112121213 in words is "one hundred twelve million, one hundred twenty-one thousand, two hundred thirteen".