1021253312 has 28 divisors (see below), whose sum is σ = 2028123960. Its totient is φ = 510230016.

The previous prime is 1021253273. The next prime is 1021253339. The reversal of 1021253312 is 2133521201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87908 + ... + 98844.

Almost surely, 2^1021253312 is an apocalyptic number.

It is an amenable number.

1021253312 is a deficient number, since it is larger than the sum of its proper divisors (1006870648).

1021253312 is a wasteful number, since it uses less digits than its factorization.

1021253312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12408 (or 12398 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1021253312 is about 31957.0541821364. The cubic root of 1021253312 is about 1007.0348324176.

Adding to 1021253312 its reverse (2133521201), we get a palindrome (3154774513).

The spelling of 1021253312 in words is "one billion, twenty-one million, two hundred fifty-three thousand, three hundred twelve".