112121381 has 2 divisors, whose sum is σ = 112121382. Its totient is φ = 112121380.

The previous prime is 112121363. The next prime is 112121407. The reversal of 112121381 is 183121211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73805281 + 38316100 = 8591^2 + 6190^2 .

It is a cyclic number.

It is not a de Polignac number, because 112121381 - 2²² = 107927077 is a prime.

It is a super-2 number, since 2×112121381² = 25142408154694322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112121311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060690 + 56060691.

It is an arithmetic number, because the mean of its divisors is an integer number (56060691).

Almost surely, 2^112121381 is an apocalyptic number.

It is an amenable number.

112121381 is a deficient number, since it is larger than the sum of its proper divisors (1).

112121381 is an equidigital number, since it uses as much as digits as its factorization.

112121381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 20.

The square root of 112121381 is about 10588.7384045504. The cubic root of 112121381 is about 482.2025241796.

Adding to 112121381 its reverse (183121211), we get a palindrome (295242592).

The spelling of 112121381 in words is "one hundred twelve million, one hundred twenty-one thousand, three hundred eighty-one".