111021020120047 has 2 divisors, whose sum is σ = 111021020120048. Its totient is φ = 111021020120046.

The previous prime is 111021020120041. The next prime is 111021020120051. The reversal of 111021020120047 is 740021020120111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111021020120047 - 2³ = 111021020120039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111021020120041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510510060023 + 55510510060024.

It is an arithmetic number, because the mean of its divisors is an integer number (55510510060024).

Almost surely, 2^{111021020120047} is an apocalyptic number.

111021020120047 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021020120047 is an equidigital number, since it uses as much as digits as its factorization.

111021020120047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 111021020120047 its reverse (740021020120111), we get a palindrome (851042040240158).

The spelling of 111021020120047 in words is "one hundred eleven trillion, twenty-one billion, twenty million, one hundred twenty thousand, forty-seven".