1012220249 has 2 divisors, whose sum is σ = 1012220250. Its totient is φ = 1012220248.

The previous prime is 1012220227. The next prime is 1012220257. The reversal of 1012220249 is 9420222101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 838507849 + 173712400 = 28957^2 + 13180^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012220249 - 2⁸ = 1012219993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1012220149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506110124 + 506110125.

It is an arithmetic number, because the mean of its divisors is an integer number (506110125).

Almost surely, 2^1012220249 is an apocalyptic number.

It is an amenable number.

1012220249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012220249 is an equidigital number, since it uses as much as digits as its factorization.

1012220249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1012220249 is about 31815.4089868416. The cubic root of 1012220249 is about 1004.0569353516.

The spelling of 1012220249 in words is "one billion, twelve million, two hundred twenty thousand, two hundred forty-nine".