1021233612 has 48 divisors (see below), whose sum is σ = 2761661952. Its totient is φ = 287669760.

The previous prime is 1021233607. The next prime is 1021233613. The reversal of 1021233612 is 2163321201.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1021233613) 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, 79653 + ... + 91580.

It is an arithmetic number, because the mean of its divisors is an integer number (57534624).

Almost surely, 2^1021233612 is an apocalyptic number.

1021233612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021233612 is an abundant number, since it is smaller than the sum of its proper divisors (1740428340).

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

1021233612 is a wasteful number, since it uses less digits than its factorization.

1021233612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171318 (or 171316 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1021233612 is about 31956.7459544929. The cubic root of 1021233612 is about 1007.0283571342.

Adding to 1021233612 its reverse (2163321201), we get a palindrome (3184554813).

The spelling of 1021233612 in words is "one billion, twenty-one million, two hundred thirty-three thousand, six hundred twelve".