111325421 has 2 divisors, whose sum is σ = 111325422. Its totient is φ = 111325420.

The previous prime is 111325411. The next prime is 111325429. The reversal of 111325421 is 124523111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79459396 + 31866025 = 8914^2 + 5645^2 .

It is a cyclic number.

It is not a de Polignac number, because 111325421 - 2²² = 107131117 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111325393 and 111325402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111325429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55662710 + 55662711.

It is an arithmetic number, because the mean of its divisors is an integer number (55662711).

Almost surely, 2^111325421 is an apocalyptic number.

It is an amenable number.

111325421 is a deficient number, since it is larger than the sum of its proper divisors (1).

111325421 is an equidigital number, since it uses as much as digits as its factorization.

111325421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 111325421 is about 10551.0862473965. The cubic root of 111325421 is about 481.0587466049.

Adding to 111325421 its reverse (124523111), we get a palindrome (235848532).

The spelling of 111325421 in words is "one hundred eleven million, three hundred twenty-five thousand, four hundred twenty-one".