21111301119847 has 2 divisors, whose sum is σ = 21111301119848. Its totient is φ = 21111301119846.

The previous prime is 21111301119767. The next prime is 21111301119859. The reversal of 21111301119847 is 74891110311112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21111301119847 - 2³¹ = 21109153636199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21111305119847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555650559923 + 10555650559924.

It is an arithmetic number, because the mean of its divisors is an integer number (10555650559924).

Almost surely, 2^{21111301119847} is an apocalyptic number.

21111301119847 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111301119847 is an equidigital number, since it uses as much as digits as its factorization.

21111301119847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 40.

The spelling of 21111301119847 in words is "twenty-one trillion, one hundred eleven billion, three hundred one million, one hundred nineteen thousand, eight hundred forty-seven".