32120131232221 has 16 divisors (see below), whose sum is σ = 32383928666880. Its totient is φ = 31857261696640.

The previous prime is 32120131232219. The next prime is 32120131232249. The reversal of 32120131232221 is 12223213102123.

It is a cyclic number.

It is not a de Polignac number, because 32120131232221 - 2¹ = 32120131232219 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 (32120131233221) 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, 139175895 + ... + 139406491.

It is an arithmetic number, because the mean of its divisors is an integer number (2023995541680).

Almost surely, 2^{32120131232221} is an apocalyptic number.

It is an amenable number.

32120131232221 is a deficient number, since it is larger than the sum of its proper divisors (263797434659).

32120131232221 is a wasteful number, since it uses less digits than its factorization.

32120131232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232604.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 32120131232221 its reverse (12223213102123), we get a palindrome (44343344334344).

The spelling of 32120131232221 in words is "thirty-two trillion, one hundred twenty billion, one hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-one".