2321220132 has 96 divisors (see below), whose sum is σ = 7502960640. Its totient is φ = 602912160.

The previous prime is 2321220131. The next prime is 2321220133. The reversal of 2321220132 is 2310221232.

It is an interprime number because it is at equal distance from previous prime (2321220131) and next prime (2321220133).

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

It is not an unprimeable number, because it can be changed into a prime (2321220131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131248 + ... + 147879.

It is an arithmetic number, because the mean of its divisors is an integer number (78155840).

Almost surely, 2^2321220132 is an apocalyptic number.

2321220132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2321220132 is an abundant number, since it is smaller than the sum of its proper divisors (5181740508).

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

2321220132 is a wasteful number, since it uses less digits than its factorization.

2321220132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279158 (or 279150 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2321220132 is about 48179.0424562382. The cubic root of 2321220132 is about 1324.0532231566.

Adding to 2321220132 its reverse (2310221232), we get a palindrome (4631441364).

The spelling of 2321220132 in words is "two billion, three hundred twenty-one million, two hundred twenty thousand, one hundred thirty-two".