1012213243 has 2 divisors, whose sum is σ = 1012213244. Its totient is φ = 1012213242.

The previous prime is 1012213193. The next prime is 1012213253. The reversal of 1012213243 is 3423122101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012213243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012213243.

It is not a weakly prime, because it can be changed into another prime (1012213253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506106621 + 506106622.

It is an arithmetic number, because the mean of its divisors is an integer number (506106622).

Almost surely, 2^1012213243 is an apocalyptic number.

1012213243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012213243 is an equidigital number, since it uses as much as digits as its factorization.

1012213243 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 19.

The square root of 1012213243 is about 31815.2988827702. The cubic root of 1012213243 is about 1004.0546188468.

Adding to 1012213243 its reverse (3423122101), we get a palindrome (4435335344).

The spelling of 1012213243 in words is "one billion, twelve million, two hundred thirteen thousand, two hundred forty-three".