113112421 has 2 divisors, whose sum is σ = 113112422. Its totient is φ = 113112420.

The previous prime is 113112401. The next prime is 113112431. The reversal of 113112421 is 124211311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62631396 + 50481025 = 7914^2 + 7105^2 .

It is a cyclic number.

It is not a de Polignac number, because 113112421 - 2¹¹ = 113110373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113112395 and 113112404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113112401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56556210 + 56556211.

It is an arithmetic number, because the mean of its divisors is an integer number (56556211).

Almost surely, 2^113112421 is an apocalyptic number.

It is an amenable number.

113112421 is a deficient number, since it is larger than the sum of its proper divisors (1).

113112421 is an equidigital number, since it uses as much as digits as its factorization.

113112421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 16.

The square root of 113112421 is about 10635.4323372395. The cubic root of 113112421 is about 483.6190867790.

Adding to 113112421 its reverse (124211311), we get a palindrome (237323732).

The spelling of 113112421 in words is "one hundred thirteen million, one hundred twelve thousand, four hundred twenty-one".