1021135236 has 48 divisors (see below), whose sum is σ = 2601123840. Its totient is φ = 309212320.

The previous prime is 1021135231. The next prime is 1021135249. The reversal of 1021135236 is 6325311201.

1021135236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1021135231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353245 + ... + 356123.

It is an arithmetic number, because the mean of its divisors is an integer number (54190080).

Almost surely, 2^1021135236 is an apocalyptic number.

It is an amenable number.

1021135236 is an abundant number, since it is smaller than the sum of its proper divisors (1579988604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021135236 is a wasteful number, since it uses less digits than its factorization.

1021135236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5584 (or 5582 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1021135236 is about 31955.2067118960. The cubic root of 1021135236 is about 1006.9960202292.

Adding to 1021135236 its reverse (6325311201), we get a palindrome (7346446437).

The spelling of 1021135236 in words is "one billion, twenty-one million, one hundred thirty-five thousand, two hundred thirty-six".