211000120021973 has 2 divisors, whose sum is σ = 211000120021974. Its totient is φ = 211000120021972.

The previous prime is 211000120021963. The next prime is 211000120022023. The reversal of 211000120021973 is 379120021000112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208996810985284 + 2003309036689 = 14456722^2 + 1415383^2 .

It is a cyclic number.

It is not a de Polignac number, because 211000120021973 - 2¹⁸ = 211000119759829 is a prime.

It is a super-2 number, since 2×211000120021973² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211000120021913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105500060010986 + 105500060010987.

It is an arithmetic number, because the mean of its divisors is an integer number (105500060010987).

Almost surely, 2^{211000120021973} is an apocalyptic number.

It is an amenable number.

211000120021973 is a deficient number, since it is larger than the sum of its proper divisors (1).

211000120021973 is an equidigital number, since it uses as much as digits as its factorization.

211000120021973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The spelling of 211000120021973 in words is "two hundred eleven trillion, one hundred twenty million, twenty-one thousand, nine hundred seventy-three".