1012012249 has 2 divisors, whose sum is σ = 1012012250. Its totient is φ = 1012012248.

The previous prime is 1012012247. The next prime is 1012012273. The reversal of 1012012249 is 9422102101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 568488649 + 443523600 = 23843^2 + 21060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012012249 - 2¹ = 1012012247 is a prime.

Together with 1012012247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1012012247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506006124 + 506006125.

It is an arithmetic number, because the mean of its divisors is an integer number (506006125).

Almost surely, 2^1012012249 is an apocalyptic number.

It is an amenable number.

1012012249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012012249 is an equidigital number, since it uses as much as digits as its factorization.

1012012249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1012012249 is about 31812.1399625992. The cubic root of 1012012249 is about 1003.9881564636.

The spelling of 1012012249 in words is "one billion, twelve million, twelve thousand, two hundred forty-nine".