1021213232357 has 2 divisors, whose sum is σ = 1021213232358. Its totient is φ = 1021213232356.

The previous prime is 1021213232243. The next prime is 1021213232399. The reversal of 1021213232357 is 7532323121201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 673238301121 + 347974931236 = 820511^2 + 589894^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021213232357 - 2¹² = 1021213228261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021213232057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510606616178 + 510606616179.

It is an arithmetic number, because the mean of its divisors is an integer number (510606616179).

Almost surely, 2^{1021213232357} is an apocalyptic number.

It is an amenable number.

1021213232357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021213232357 is an equidigital number, since it uses as much as digits as its factorization.

1021213232357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

Adding to 1021213232357 its reverse (7532323121201), we get a palindrome (8553536353558).

The spelling of 1021213232357 in words is "one trillion, twenty-one billion, two hundred thirteen million, two hundred thirty-two thousand, three hundred fifty-seven".