1111021253 has 2 divisors, whose sum is σ = 1111021254. Its totient is φ = 1111021252.

The previous prime is 1111021231. The next prime is 1111021267. The reversal of 1111021253 is 3521201111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 753886849 + 357134404 = 27457^2 + 18898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111021253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111021753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555510626 + 555510627.

It is an arithmetic number, because the mean of its divisors is an integer number (555510627).

Almost surely, 2^1111021253 is an apocalyptic number.

It is an amenable number.

1111021253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111021253 is an equidigital number, since it uses as much as digits as its factorization.

1111021253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1111021253 is about 33331.9854344142. The cubic root of 1111021253 is about 1035.7162468942.

Adding to 1111021253 its reverse (3521201111), we get a palindrome (4632222364).

The spelling of 1111021253 in words is "one billion, one hundred eleven million, twenty-one thousand, two hundred fifty-three".