132221651421 has 4 divisors (see below), whose sum is σ = 176295535232. Its totient is φ = 88147767612.

The previous prime is 132221651389. The next prime is 132221651431. The reversal of 132221651421 is 124156122231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 132221651421 - 2⁵ = 132221651389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132221651431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22036941901 + ... + 22036941906.

It is an arithmetic number, because the mean of its divisors is an integer number (44073883808).

Almost surely, 2^132221651421 is an apocalyptic number.

It is an amenable number.

132221651421 is a deficient number, since it is larger than the sum of its proper divisors (44073883811).

132221651421 is an equidigital number, since it uses as much as digits as its factorization.

132221651421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44073883810.

The product of its digits is 5760, while the sum is 30.

Adding to 132221651421 its reverse (124156122231), we get a palindrome (256377773652).

The spelling of 132221651421 in words is "one hundred thirty-two billion, two hundred twenty-one million, six hundred fifty-one thousand, four hundred twenty-one".