1021235112 has 48 divisors (see below), whose sum is σ = 2792718240. Its totient is φ = 337104288.

The previous prime is 1021235081. The next prime is 1021235183. The reversal of 1021235112 is 2115321201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 61438 + ... + 76269.

It is an arithmetic number, because the mean of its divisors is an integer number (58181630).

Almost surely, 2^1021235112 is an apocalyptic number.

1021235112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021235112 is an abundant number, since it is smaller than the sum of its proper divisors (1771483128).

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

1021235112 is a wasteful number, since it uses less digits than its factorization.

1021235112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137822 (or 137815 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1021235112 is about 31956.7694237074. The cubic root of 1021235112 is about 1007.0288501790.

Adding to 1021235112 its reverse (2115321201), we get a palindrome (3136556313).

The spelling of 1021235112 in words is "one billion, twenty-one million, two hundred thirty-five thousand, one hundred twelve".