1012221232 has 40 divisors (see below), whose sum is σ = 2145434112. Its totient is φ = 458817600.

The previous prime is 1012221229. The next prime is 1012221277. The reversal of 1012221232 is 2321222101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56757 + ... + 72427.

Almost surely, 2^1012221232 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 1012221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072717056).

1012221232 is an abundant number, since it is smaller than the sum of its proper divisors (1133212880).

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

1012221232 is a wasteful number, since it uses less digits than its factorization.

1012221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16057 (or 16051 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1012221232 is about 31815.4244353270. The cubic root of 1012221232 is about 1004.0572603756.

Adding to 1012221232 its reverse (2321222101), we get a palindrome (3333443333).

The spelling of 1012221232 in words is "one billion, twelve million, two hundred twenty-one thousand, two hundred thirty-two".