111740988119221 has 2 divisors, whose sum is σ = 111740988119222. Its totient is φ = 111740988119220.

The previous prime is 111740988119219. The next prime is 111740988119303. The reversal of 111740988119221 is 122911889047111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111740988119121 + 100 = 10570761^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 111740988119221 - 2¹ = 111740988119219 is a prime.

Together with 111740988119219, 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 (111740988149221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55870494059610 + 55870494059611.

It is an arithmetic number, because the mean of its divisors is an integer number (55870494059611).

Almost surely, 2^{111740988119221} is an apocalyptic number.

It is an amenable number.

111740988119221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111740988119221 is an equidigital number, since it uses as much as digits as its factorization.

111740988119221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 55.

The spelling of 111740988119221 in words is "one hundred eleven trillion, seven hundred forty billion, nine hundred eighty-eight million, one hundred nineteen thousand, two hundred twenty-one".