32133231821 has 2 divisors, whose sum is σ = 32133231822. Its totient is φ = 32133231820.

The previous prime is 32133231811. The next prime is 32133231827. The reversal of 32133231821 is 12813233123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23186152900 + 8947078921 = 152270^2 + 94589^2 .

It is an emirp because it is prime and its reverse (12813233123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32133231821 - 2³⁴ = 14953362637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32133231827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16066615910 + 16066615911.

It is an arithmetic number, because the mean of its divisors is an integer number (16066615911).

Almost surely, 2^32133231821 is an apocalyptic number.

It is an amenable number.

32133231821 is a deficient number, since it is larger than the sum of its proper divisors (1).

32133231821 is an equidigital number, since it uses as much as digits as its factorization.

32133231821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

Adding to 32133231821 its reverse (12813233123), we get a palindrome (44946464944).

The spelling of 32133231821 in words is "thirty-two billion, one hundred thirty-three million, two hundred thirty-one thousand, eight hundred twenty-one".