1021320132 has 36 divisors (see below), whose sum is σ = 2772156240. Its totient is φ = 291805584.

The previous prime is 1021320107. The next prime is 1021320143. The reversal of 1021320132 is 2310231201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 867882 + ... + 869057.

It is an arithmetic number, because the mean of its divisors is an integer number (77004340).

Almost surely, 2^1021320132 is an apocalyptic number.

1021320132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021320132 is an abundant number, since it is smaller than the sum of its proper divisors (1750836108).

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

1021320132 is a wasteful number, since it uses less digits than its factorization.

1021320132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736960 (or 1736951 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1021320132 is about 31958.0996306101. The cubic root of 1021320132 is about 1007.0567951697.

Adding to 1021320132 its reverse (2310231201), we get a palindrome (3331551333).

The spelling of 1021320132 in words is "one billion, twenty-one million, three hundred twenty thousand, one hundred thirty-two".