202200211981 has 2 divisors, whose sum is σ = 202200211982. Its totient is φ = 202200211980.

The previous prime is 202200211957. The next prime is 202200212003. The reversal of 202200211981 is 189112002202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141425636356 + 60774575625 = 376066^2 + 246525^2 .

It is a cyclic number.

It is not a de Polignac number, because 202200211981 - 2¹⁹ = 202199687693 is a prime.

It is a super-2 number, since 2×202200211981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202200211781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101100105990 + 101100105991.

It is an arithmetic number, because the mean of its divisors is an integer number (101100105991).

Almost surely, 2^202200211981 is an apocalyptic number.

It is an amenable number.

202200211981 is a deficient number, since it is larger than the sum of its proper divisors (1).

202200211981 is an equidigital number, since it uses as much as digits as its factorization.

202200211981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 202200211981 in words is "two hundred two billion, two hundred million, two hundred eleven thousand, nine hundred eighty-one".