1102660261 has 2 divisors, whose sum is σ = 1102660262. Its totient is φ = 1102660260.

The previous prime is 1102660259. The next prime is 1102660277. The reversal of 1102660261 is 1620662011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1047752161 + 54908100 = 32369^2 + 7410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102660261 - 2¹ = 1102660259 is a prime.

Together with 1102660259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102660201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551330130 + 551330131.

It is an arithmetic number, because the mean of its divisors is an integer number (551330131).

Almost surely, 2^1102660261 is an apocalyptic number.

It is an amenable number.

1102660261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102660261 is an equidigital number, since it uses as much as digits as its factorization.

1102660261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1102660261 is about 33206.3286287418. The cubic root of 1102660261 is about 1033.1116074969. Note that the first 3 decimals are identical.

The spelling of 1102660261 in words is "one billion, one hundred two million, six hundred sixty thousand, two hundred sixty-one".