11201210111881 has 2 divisors, whose sum is σ = 11201210111882. Its totient is φ = 11201210111880.

The previous prime is 11201210111869. The next prime is 11201210111963. The reversal of 11201210111881 is 18811101210211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11113449011856 + 87761100025 = 3333684^2 + 296245^2 .

It is a cyclic number.

It is not a de Polignac number, because 11201210111881 - 2²⁹ = 11200673240969 is a prime.

It is a super-2 number, since 2×11201210111881² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11201210111381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600605055940 + 5600605055941.

It is an arithmetic number, because the mean of its divisors is an integer number (5600605055941).

Almost surely, 2^{11201210111881} is an apocalyptic number.

It is an amenable number.

11201210111881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201210111881 is an equidigital number, since it uses as much as digits as its factorization.

11201210111881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 28.

The spelling of 11201210111881 in words is "eleven trillion, two hundred one billion, two hundred ten million, one hundred eleven thousand, eight hundred eighty-one".