111010100109943 has 2 divisors, whose sum is σ = 111010100109944. Its totient is φ = 111010100109942.

The previous prime is 111010100109919. The next prime is 111010100110171. The reversal of 111010100109943 is 349901001010111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111010100109943 - 2²¹ = 111010098012791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111010100109143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505050054971 + 55505050054972.

It is an arithmetic number, because the mean of its divisors is an integer number (55505050054972).

Almost surely, 2^{111010100109943} is an apocalyptic number.

111010100109943 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010100109943 is an equidigital number, since it uses as much as digits as its factorization.

111010100109943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 31.

The spelling of 111010100109943 in words is "one hundred eleven trillion, ten billion, one hundred million, one hundred nine thousand, nine hundred forty-three".