111421253 has 2 divisors, whose sum is σ = 111421254. Its totient is φ = 111421252.

The previous prime is 111421243. The next prime is 111421259. The reversal of 111421253 is 352124111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107288164 + 4133089 = 10358^2 + 2033^2 .

It is a cyclic number.

It is not a de Polignac number, because 111421253 - 2¹² = 111417157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111421259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55710626 + 55710627.

It is an arithmetic number, because the mean of its divisors is an integer number (55710627).

Almost surely, 2^111421253 is an apocalyptic number.

It is an amenable number.

111421253 is a deficient number, since it is larger than the sum of its proper divisors (1).

111421253 is an equidigital number, since it uses as much as digits as its factorization.

111421253 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 111421253 is about 10555.6266038545. The cubic root of 111421253 is about 481.1967432380.

Adding to 111421253 its reverse (352124111), we get a palindrome (463545364).

The spelling of 111421253 in words is "one hundred eleven million, four hundred twenty-one thousand, two hundred fifty-three".