112366661261 has 2 divisors, whose sum is σ = 112366661262. Its totient is φ = 112366661260.

The previous prime is 112366661237. The next prime is 112366661321. The reversal of 112366661261 is 162166663211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64506348361 + 47860312900 = 253981^2 + 218770^2 .

It is a cyclic number.

It is not a de Polignac number, because 112366661261 - 2²⁶ = 112299552397 is a prime.

It is a super-2 number, since 2×112366661261² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112366661221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56183330630 + 56183330631.

It is an arithmetic number, because the mean of its divisors is an integer number (56183330631).

Almost surely, 2^112366661261 is an apocalyptic number.

It is an amenable number.

112366661261 is a deficient number, since it is larger than the sum of its proper divisors (1).

112366661261 is an equidigital number, since it uses as much as digits as its factorization.

112366661261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The spelling of 112366661261 in words is "one hundred twelve billion, three hundred sixty-six million, six hundred sixty-one thousand, two hundred sixty-one".