111011120021947 has 2 divisors, whose sum is σ = 111011120021948. Its totient is φ = 111011120021946.

The previous prime is 111011120021939. The next prime is 111011120022041. The reversal of 111011120021947 is 749120021110111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111011120021947 - 2³ = 111011120021939 is a prime.

It is not a weakly prime, because it can be changed into another prime (111011120021447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505560010973 + 55505560010974.

It is an arithmetic number, because the mean of its divisors is an integer number (55505560010974).

Almost surely, 2^{111011120021947} is an apocalyptic number.

111011120021947 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011120021947 is an equidigital number, since it uses as much as digits as its factorization.

111011120021947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 31.

The spelling of 111011120021947 in words is "one hundred eleven trillion, eleven billion, one hundred twenty million, twenty-one thousand, nine hundred forty-seven".