1012213357 has 2 divisors, whose sum is σ = 1012213358. Its totient is φ = 1012213356.

The previous prime is 1012213309. The next prime is 1012213369. The reversal of 1012213357 is 7533122101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 558565956 + 453647401 = 23634^2 + 21299^2 .

It is an emirp because it is prime and its reverse (7533122101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012213357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012213387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506106678 + 506106679.

It is an arithmetic number, because the mean of its divisors is an integer number (506106679).

Almost surely, 2^1012213357 is an apocalyptic number.

It is an amenable number.

1012213357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012213357 is an equidigital number, since it uses as much as digits as its factorization.

1012213357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 1012213357 is about 31815.3006743611. The cubic root of 1012213357 is about 1004.0546565405.

Adding to 1012213357 its reverse (7533122101), we get a palindrome (8545335458).

It can be divided in two parts, 1012 and 213357, that added together give a square (214369 = 463²).

The spelling of 1012213357 in words is "one billion, twelve million, two hundred thirteen thousand, three hundred fifty-seven".