1021240112 has 40 divisors (see below), whose sum is σ = 2087946720. Its totient is φ = 482915840.

The previous prime is 1021240109. The next prime is 1021240127. The reversal of 1021240112 is 2110421201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17162 + ... + 48342.

It is an arithmetic number, because the mean of its divisors is an integer number (52198668).

Almost surely, 2^1021240112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021240112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1043973360).

1021240112 is an abundant number, since it is smaller than the sum of its proper divisors (1066706608).

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

1021240112 is a wasteful number, since it uses less digits than its factorization.

1021240112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31301 (or 31295 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1021240112 is about 31956.8476542978. The cubic root of 1021240112 is about 1007.0304936582.

Adding to 1021240112 its reverse (2110421201), we get a palindrome (3131661313).

The spelling of 1021240112 in words is "one billion, twenty-one million, two hundred forty thousand, one hundred twelve".