1120265261 has 2 divisors, whose sum is σ = 1120265262. Its totient is φ = 1120265260.

The previous prime is 1120265231. The next prime is 1120265281. The reversal of 1120265261 is 1625620211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675688036 + 444577225 = 25994^2 + 21085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120265261 - 2²² = 1116070957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1120265261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120265231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560132630 + 560132631.

It is an arithmetic number, because the mean of its divisors is an integer number (560132631).

Almost surely, 2^1120265261 is an apocalyptic number.

It is an amenable number.

1120265261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120265261 is an equidigital number, since it uses as much as digits as its factorization.

1120265261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1120265261 is about 33470.3639209376. The cubic root of 1120265261 is about 1038.5807999806.

Adding to 1120265261 its reverse (1625620211), we get a palindrome (2745885472).

The spelling of 1120265261 in words is "one billion, one hundred twenty million, two hundred sixty-five thousand, two hundred sixty-one".