1021712253 has 16 divisors (see below), whose sum is σ = 1410851520. Its totient is φ = 656910464.

The previous prime is 1021712243. The next prime is 1021712261. The reversal of 1021712253 is 3522171201.

It is a cyclic number.

It is not a de Polignac number, because 1021712253 - 2¹⁸ = 1021450109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021712203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76750 + ... + 89072.

It is an arithmetic number, because the mean of its divisors is an integer number (88178220).

Almost surely, 2^1021712253 is an apocalyptic number.

It is an amenable number.

1021712253 is a deficient number, since it is larger than the sum of its proper divisors (389139267).

1021712253 is a wasteful number, since it uses less digits than its factorization.

1021712253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13308.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1021712253 is about 31964.2339654809. The cubic root of 1021712253 is about 1007.1856602789.

Adding to 1021712253 its reverse (3522171201), we get a palindrome (4543883454).

The spelling of 1021712253 in words is "one billion, twenty-one million, seven hundred twelve thousand, two hundred fifty-three".