2111011201973 has 2 divisors, whose sum is σ = 2111011201974. Its totient is φ = 2111011201972.

The previous prime is 2111011201969. The next prime is 2111011202017. The reversal of 2111011201973 is 3791021101112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1746777225649 + 364233976324 = 1321657^2 + 603518^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111011201973 - 2² = 2111011201969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111011201903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055505600986 + 1055505600987.

It is an arithmetic number, because the mean of its divisors is an integer number (1055505600987).

Almost surely, 2^{2111011201973} is an apocalyptic number.

It is an amenable number.

2111011201973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111011201973 is an equidigital number, since it uses as much as digits as its factorization.

2111011201973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 29.

The spelling of 2111011201973 in words is "two trillion, one hundred eleven billion, eleven million, two hundred one thousand, nine hundred seventy-three".