202021102249 has 2 divisors, whose sum is σ = 202021102250. Its totient is φ = 202021102248.

The previous prime is 202021102183. The next prime is 202021102259. The reversal of 202021102249 is 942201120202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201726739600 + 294362649 = 449140^2 + 17157^2 .

It is a cyclic number.

It is not a de Polignac number, because 202021102249 - 2⁷ = 202021102121 is a prime.

It is not a weakly prime, because it can be changed into another prime (202021102259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010551124 + 101010551125.

It is an arithmetic number, because the mean of its divisors is an integer number (101010551125).

Almost surely, 2^202021102249 is an apocalyptic number.

It is an amenable number.

202021102249 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021102249 is an equidigital number, since it uses as much as digits as its factorization.

202021102249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 202021102249 in words is "two hundred two billion, twenty-one million, one hundred two thousand, two hundred forty-nine".