1021321132 has 24 divisors (see below), whose sum is σ = 1926189216. Its totient is φ = 471038208.

The previous prime is 1021321129. The next prime is 1021321157. The reversal of 1021321132 is 2311231201.

It is a super-2 number, since 2×1021321132² = 2086193709339522848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74433 + ... + 87079.

It is an arithmetic number, because the mean of its divisors is an integer number (80257884).

Almost surely, 2^1021321132 is an apocalyptic number.

It is an amenable number.

1021321132 is a deficient number, since it is larger than the sum of its proper divisors (904868084).

1021321132 is a wasteful number, since it uses less digits than its factorization.

1021321132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14217 (or 14215 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1021321132 is about 31958.1152760922. The cubic root of 1021321132 is about 1007.0571238477.

Adding to 1021321132 its reverse (2311231201), we get a palindrome (3332552333).

The spelling of 1021321132 in words is "one billion, twenty-one million, three hundred twenty-one thousand, one hundred thirty-two".