1021202449 has 2 divisors, whose sum is σ = 1021202450. Its totient is φ = 1021202448.

The previous prime is 1021202447. The next prime is 1021202459. The reversal of 1021202449 is 9442021201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743380225 + 277822224 = 27265^2 + 16668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021202449 - 2¹ = 1021202447 is a prime.

Together with 1021202447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1021202447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510601224 + 510601225.

It is an arithmetic number, because the mean of its divisors is an integer number (510601225).

Almost surely, 2^1021202449 is an apocalyptic number.

It is an amenable number.

1021202449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021202449 is an equidigital number, since it uses as much as digits as its factorization.

1021202449 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 square root of 1021202449 is about 31956.2583698405. The cubic root of 1021202449 is about 1007.0181138547.

The spelling of 1021202449 in words is "one billion, twenty-one million, two hundred two thousand, four hundred forty-nine".