112201121261 has 2 divisors, whose sum is σ = 112201121262. Its totient is φ = 112201121260.

The previous prime is 112201121189. The next prime is 112201121281. The reversal of 112201121261 is 162121102211.

It is an a-pointer prime, because the next prime (112201121281) can be obtained adding 112201121261 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71550900100 + 40650221161 = 267490^2 + 201619^2 .

It is an emirp because it is prime and its reverse (162121102211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 112201121261 - 2³⁴ = 95021252077 is a prime.

It is a super-2 number, since 2×112201121261² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112201121281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56100560630 + 56100560631.

It is an arithmetic number, because the mean of its divisors is an integer number (56100560631).

Almost surely, 2^112201121261 is an apocalyptic number.

It is an amenable number.

112201121261 is a deficient number, since it is larger than the sum of its proper divisors (1).

112201121261 is an equidigital number, since it uses as much as digits as its factorization.

112201121261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 112201121261 its reverse (162121102211), we get a palindrome (274322223472).

The spelling of 112201121261 in words is "one hundred twelve billion, two hundred one million, one hundred twenty-one thousand, two hundred sixty-one".