1110002001971 has 2 divisors, whose sum is σ = 1110002001972. Its totient is φ = 1110002001970.

The previous prime is 1110002001883. The next prime is 1110002002003. The reversal of 1110002001971 is 1791002000111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110002001971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1110002001571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555001000985 + 555001000986.

It is an arithmetic number, because the mean of its divisors is an integer number (555001000986).

Almost surely, 2^{1110002001971} is an apocalyptic number.

1110002001971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110002001971 is an equidigital number, since it uses as much as digits as its factorization.

1110002001971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 23.

The spelling of 1110002001971 in words is "one trillion, one hundred ten billion, two million, one thousand, nine hundred seventy-one".