132221213031221 has 16 divisors (see below), whose sum is σ = 132735720121200. Its totient is φ = 131707517460480.

The previous prime is 132221213031163. The next prime is 132221213031283. The reversal of 132221213031221 is 122130312122231.

It can be written as a sum of positive squares in 8 ways, for example, as 11522535204196 + 120698677827025 = 3394486^2 + 10986295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132221213031221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132221293031221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3034453991 + ... + 3034497563.

It is an arithmetic number, because the mean of its divisors is an integer number (8295982507575).

Almost surely, 2^{132221213031221} is an apocalyptic number.

It is an amenable number.

132221213031221 is a deficient number, since it is larger than the sum of its proper divisors (514507089979).

132221213031221 is a wasteful number, since it uses less digits than its factorization.

132221213031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52616.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 132221213031221 its reverse (122130312122231), we get a palindrome (254351525153452).

The spelling of 132221213031221 in words is "one hundred thirty-two trillion, two hundred twenty-one billion, two hundred thirteen million, thirty-one thousand, two hundred twenty-one".