111261545205211 has 2 divisors, whose sum is σ = 111261545205212. Its totient is φ = 111261545205210.

The previous prime is 111261545205143. The next prime is 111261545205299. The reversal of 111261545205211 is 112502545162111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111261545205211 is a prime.

It is not a weakly prime, because it can be changed into another prime (111261545208211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55630772602605 + 55630772602606.

It is an arithmetic number, because the mean of its divisors is an integer number (55630772602606).

Almost surely, 2^{111261545205211} is an apocalyptic number.

111261545205211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111261545205211 is an equidigital number, since it uses as much as digits as its factorization.

111261545205211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 37.

The spelling of 111261545205211 in words is "one hundred eleven trillion, two hundred sixty-one billion, five hundred forty-five million, two hundred five thousand, two hundred eleven".